A3 lockable black anodised aluminium poster case with a 45mm frame profile, complete with wall fixings for secure display.
Durable A3 poster case in black anodised aluminium, featuring a lockable design, 45mm frame profile, and wall fixings included.
a3-black-wall-mounted-poster-case-with-lockable-frame-weatherproof-protection-and-anti-glare-clarity
Dimension diagram of an A3 lockable poster case in a black aluminium frame, measuring 367mm wide by 490mm high by 30mm deep with a 400 x 280mm visible area.
Sleek lockable A3 poster case with a 45mm frame profile, crafted from black anodised aluminium and supplied with wall fixings.

A3 Lockable Anodised Aluminium Black Poster Case with 45mm Frame Profile With Wall Fixings

Product code: SFLA3B
When wind drives rain sideways at a shopfront, water does not simply land on the front of a wall-mounted case and run off the bottom. It is pushed a...
Inc. VAT £69.00 Ex. VAT £57.50
Colour - Black
Paper Size - A3

Same lock and key security across every paper size and colour.

In Stock - UK Despatch

Order before 4pm today for next working day despatch — Next Day option available at checkout

At a glance

The Displaysense SFLA3B is a wall-mounted lockable snap frame, 367mm wide by 490mm high by 30mm deep, with satin black anodised. It is delivered free to UK Mainland.

Buying for a business, school or council?Volume discounts, same-day trade quotes, and 30-day credit accounts for schools, NHS and councils.
Request a quoteor call 01279 460 460
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Finish your display like a professional

Free UK DeliveryFree mainland delivery on every order. No minimum spend, no hidden charges.
Trade and Bulk Pricing AvailableVolume discounts from 2 units. Call us for a tailored quote.
50 Years of Trusted QualityEstablished in 1978. Designed, tested and trusted by some of the UK's biggest names.
Rated Excellent by Our Customers8,000+ verified reviews. Trusted by Harrods, the NHS, Primark and The O2.

Overview

Description

Specifications

Delivery & Returns

FAQs

Knowledge Hub

Keep Control of a Notice With a Lockable Poster Case

Most businesses have a patch of wall by the front door doing nothing, while the opening hours, the price list or the safety notice that ought to live there is taped to the inside of the glass and curling at the corners. The SFLA3B gives that message a permanent home outside. A hinged door locks shut on a key, rubber gaskets run right round the inside of that door, and drainage carries off the water that a British winter throws at a wall, so an A3 sheet stays flat and readable rather than blotched and peeling. Across the front sits a clear PET screen, UV-stabilised and treated to cut glare, which takes the knocks that any display at pavement level collects. Satin black anodising finishes the aluminium in a hard, even surface that will not flake off a wall in the rain, and the whole unit arrives built with its fixings, so one person can mark, drill and hang the case in a morning. Best suited for salons, cafes and GP surgeries where a notice has to stay outside in all weathers and stay exactly as it was put up.

Why a Weatherproof Display Frame Works Outside All Year

  • Key lock keeps the content yours: Turn the key and the door is shut to everyone but a keyholder. On an unlit high street overnight, or at a gate nobody is watching at the weekend, a notice cannot be swapped, papered over with a flyer or pulled out by a passer-by.
  • Rubber gaskets and drainage together: Sealing alone is only half of it. Gaskets run the full way round the inside of the door to stop water getting in, and drainage moves off whatever does reach the frame, so nothing pools behind the screen and soaks into the paper.
  • Clear PET screen, UV-stabilised and anti-glare: Bags, umbrellas and elbows come at a display by a doorway all day. High-impact PET takes that contact, and the anti-glare treatment scatters low sun and shop lighting so a passer-by can still read the sheet at a slant.
  • Safety arm holds the door for you: Unlocking swings the door out and a metal arm catches it there, leaving both hands free. Clip the new sheet to the back panel, swing the door to and lock it. Nothing comes off the wall and no tool beyond the key is needed.
  • Satin black anodising, not a sprayed-on coat: Anodising hardens the surface of the aluminium itself rather than sitting on top of it, so there is no painted layer to chip or peel away at an exposed corner. Low sheen reads sharp against red brick, render, stone and dark cladding.
  • Fixings supplied, nothing to assemble: Screws and plugs come in the box and the case arrives built, so fitting is a matter of marking the wall, drilling and hanging. One person gets through a row of them in a morning without a workshop or a second pair of hands.

Where a Compact Poster Holder Suits a Narrow Frontage

Salons, Barbershops and Beauty StudiosTreatment pricing and walk-in availability sit outside the window where someone deciding on the pavement can read them. A locked door means an overnight price list is still the right price list when the shutters go up in the morning.
GP Surgeries, Dental and NHS SitesClinic hours, vaccination dates and safety notices carry weight only if nobody can alter them. Sealed against rain and shut on a key, a wall case by an entrance holds that information steady between staffed hours and over a bank holiday.
Cafes, Restaurants and TakeawaysSwapping a daily board for a printed sheet under a locked screen takes the chalk and the guesswork out of a menu. Specials, a QR ordering link and opening times stay legible through drizzle and go up dry the next morning.
Schools, Nurseries and Community HubsTerm dates, safeguarding contacts and open evening notices go on a gate or an entrance wall that parents pass twice a day. Nothing can be lifted out over a weekend, and the sheet inside comes through half term unmarked.
Pubs, Bars and Leisure VenuesDoorways take contact after dark that a taped-up sheet never survives. Event listings and entry conditions sit behind an impact-resistant screen instead, where a knock from a passing crowd leaves the notice underneath untouched.
Independent Retail and BoutiquesWhere a shopfront is narrow, a compact case slots onto a pillar or the strip beside the door without crowding glass that is already working. New arrivals and sale notices then read as part of the frontage rather than stuck to it.

Prefer the Same Case in Silver?

The A3 lockable poster case in satin silver is the same build with a brushed aluminium finish, which sits better against lighter render, glazed frontages and institutional buildings where black reads too heavy. Lock, gaskets and PET screen are identical.

Call us on 01279460460 or send us your requirements and we will match the finish to the frontage.

SFLA3B is an A3 Lockable Outdoor Poster Case in Satin Black from Displaysense. Lockable hinged door with internal rubber gaskets and drainage, for permanent outdoor wall mounting. Poster size A3, 297 x 420mm. Overall size 367mm x 490mm x 30mm. Frame profile 45mm. Satin black anodised aluminium, high-impact UV-stabilised anti-glare PET front screen, safety arm, internal edge clips, key lock, wall fixings supplied, no assembly required. Suitable for indoor and outdoor use. Fitted at salons, barbershops, GP surgeries, dental practices, NHS sites, cafes, takeaways, schools, nurseries, pubs, leisure venues and independent retail. Also available in A2, A1 and A0 satin black, and in satin silver at A3. Displaysense, UK display specialist based in Hertfordshire since 1978.

When wind drives rain sideways at a shopfront, water does not simply land on the front of a wall-mounted case and run off the bottom. It is pushed at the joint between door and frame from every angle, and on a still, cold morning condensation forms on the inside of the screen instead. Two things answer that here. Rubber gaskets run the whole way round the inside face of the hinged door, closing the gap where the two halves meet, and drainage carries off anything that does find its way in rather than leaving it to sit in the bottom of the frame.

Changing a poster begins by turning the key, at which point the whole front swings out on its hinge and a metal safety arm catches the door and holds it open, which turns the job into a one-person one. Both hands are then free to line the A3 sheet against the back panel and press it under the internal edge clips, which grip the paper along its borders so it cannot slide down behind the screen over the following weeks. Swing the door to, turn the key, and the case has never left the wall. A shop can refresh a window offer before opening and a surgery can post a new clinic list on the way past, without a ladder, a screwdriver or a second person to steady anything.

PET is the clear plastic used for drinks bottles, and the sheet across the front of this case is a thicker, UV-stabilised grade of the same material. Stabilising it against ultraviolet matters outdoors because untreated clear plastics yellow and go cloudy after a year or two of direct sun. Thickness handles the other problem, which is the steady contact a display at pavement level takes from bags, umbrellas and elbows, and PET flexes under a knock rather than splitting. An anti-glare treatment on the surface then scatters low winter sun and shop lighting, so the sheet underneath stays readable to somebody approaching at an angle.

Anodising works differently from paint or powder coating. Rather than laying colour on top of the aluminium, the process converts the outer skin of the metal into a hard oxide layer that the colour sits inside, so there is no film that can lift, chip or peel away from an exposed corner after a few winters. Fixings come supplied and the case arrives fully built, which means fitting is marking the wall, drilling, plugging and hanging, with no assembly of the unit itself and no return visit to tighten anything up.

What Ships with This Poster Case

  • 1 x A3 lockable outdoor poster case in satin black, with hinged door, safety arm and internal edge clips
  • 1 x wall fixing pack with door key

Need the Same Case in a Larger Format?

The A2 lockable poster case in satin black steps the same sealed, locking build up a size for wider frontages, and A1 and A0 follow above it. Every format shares the key lock, the gaskets and the PET screen, so a run of them across a site matches.

Ring the team on 01279460460 or get in touch here to plan a set across several doorways.

SFLA3B is a satin black A3 lockable outdoor poster case supplied by Displaysense. A hinged door locks on a key over internal rubber gaskets with drainage, holding a printed sheet flat and dry on an external wall. Poster area A3, 297 x 420mm. Case size 367mm x 490mm x 30mm, on a 45mm anodised aluminium profile. Front screen is high-impact PET, UV-stabilised and anti-glare. Safety arm and internal edge clips assist single-handed poster changes. Wall fixings supplied and no assembly needed. Rated for indoor and outdoor wall mounting at shopfronts, salons, surgeries, school gates, hospitality venues and public buildings. Larger A2, A1 and A0 formats and a satin silver A3 are also stocked. Displaysense, UK display specialist based in Hertfordshire since 1978.

Full specifications for the A3 lockable outdoor poster case in satin black anodised aluminium. Key lock, internal rubber perimeter weather seal, 2mm high-impact acrylic front panel and 45mm extruded aluminium frame profile. Engineered for permanent outdoor wall mounting in compact spaces.

A3
297 x 420mm
45mm
Frame Profile
Key Lock
Tamper-Proof
Weatherproof
Rubber Seal
Compact
367 x 490mm
Specification Detail What This Means for You
Poster Insert Size A3 (portrait) The compact outdoor signage format. Fits beside narrow doors, on brick pillars and in tight entrance recesses.
Poster Area 297 x 420mm Full A3 sheet accepted. Enough space for a condensed menu, a treatment price list, a QR code or a compliance notice.
Overall Dimensions 367mm (W) x 490mm (H) x 30mm (D) Slim 30mm depth sits flush to the wall. The compact footprint fits wall spaces where larger A2 and A1 cases would overwhelm the facade.
Finish Satin black anodised Premium high-contrast border that pops against brick, render, stone, glass and dark cladding. Does not peel, flake or fade in UV light.
Frame Build 45mm aluminium extruded frame Heavy-duty construction built for years of outdoor exposure without warping, corroding or degrading. Permanent architectural fixture.
Front Panel 2mm acrylic High-impact glazing absorbs street-level knocks from bags, umbrellas and casual contact. Clear surface keeps the poster fully visible.
Security Lock Tamper-proof key lock, hinged door Only the keyholder changes the poster. Prevents vandalism, theft and unauthorised replacement in unsupervised and overnight locations.
Weather Seal Perimeter rubber gasket Industrial-grade gasket creates a continuous barrier against driving rain, condensation, road spray and dust around the entire door edge.
Poster Loading Safety arm, internal clips Built-in arm holds the door open hands-free. Clip the A3 poster against the back panel, close and lock. Seconds per change.
Mounting Wall fixings included Screws and plugs supplied. No assembly required. Drill, fix and display. Once mounted the frame is a permanent fixture.
Suitable Settings Outdoor and indoor wall mount for retail, hospitality, salons, schools, NHS and public venues Designed for storefronts, salon entrances, clinic doorways, school gates and leisure venue walls.
Also Available In A2, A1 and A0 in satin black Scale up for larger wall spaces. A3 silver also available for lighter interiors and institutional settings.

Free delivery on every order, no minimum spend

UK Mainland standard delivery included on everything we sell.

Standard

Free

Always included, no minimum order

Express

£9.95

Express options shown at checkout where available

Lead time

2 to 3 days

Working days, UK Mainland

Returns

28 days

Original condition and packaging

Good to know

  • Orders before 4pm typically ship the same day
  • Tracking email sent on dispatch
  • Ground-floor, accessible delivery point

Returns must be unused and in original packaging. Full delivery information  ·  Returns policy

Questions About This A3 Lockable Outdoor Poster Case

What is the best lockable outdoor poster case for a shopfront?
The best lockable outdoor poster case for a shopfront is the SFLA3B, an A3 case in satin black anodised aluminium. A hinged door locks on a key over internal rubber gaskets with drainage. The UV-stabilised anti-glare PET screen holds a printed sheet flat, dry and readable on an exposed external wall.
How does the weather seal on an outdoor poster case work?
Two parts work together. A rubber gasket runs the full perimeter of the hinged door, closing the line where door meets frame against driving rain and cold-morning condensation. Drainage then clears whatever still gets through. Without that second stage, standing water would sit in the base of the poster frame and ripple the paper from below.
How do I stop an outdoor notice being torn down or covered over?
A key lock is the answer. Only a keyholder opens the hinged door, so a notice cannot be lifted out, papered over with a rival flyer or swapped for something else. On an unlit high street overnight or at a school gate across a weekend, the sheet stays exactly as posted.
Is this poster case suitable for a cafe, pub or restaurant?
Yes. Cafes, pubs and restaurants use this outdoor poster case for daily specials, QR ordering links, opening hours and event listings beside the entrance. The locked door keeps an evening promotion intact overnight, and the sealed screen means a menu printed on Monday still reads clearly by Sunday.
Is this display case suitable for schools and NHS sites?
Yes. Schools, GP surgeries, dental practices and NHS sites use this wall case for term dates, clinic hours, vaccination schedules and safeguarding contacts. Locked and sealed, a notice stays legible and unaltered at a gate or a main entrance through weekends, half terms and bank holidays.
Can I change the poster without tools?
Yes, nothing beyond the key. Turning the key swings the door open and a metal safety arm holds the door there, leaving both hands free. Press the sheet against the back panel under the internal edge clips and lock up. Under a minute, and the display case never leaves the wall.
What size poster does this case take and how big is the frame?
A3, 297 x 420mm. The case measures 367mm wide, 490mm high and 30mm deep, built on a 45mm anodised aluminium profile. A3 is a standard office paper size, so a menu, price list or compliance notice prints in-house on an ordinary printer at no extra cost.
How does the A3 case compare with the A2 lockable poster case?
Both share the key lock, the gasket sealing with drainage and the UV-stabilised PET screen, so the difference is reach. The SFLA2B roughly doubles the poster area at 420 x 594mm and reads from across a road. Choose A2 for distance and a wide frontage. Choose A3 for a narrow doorway and a reader already at the door.
Do I need a lockable case for a sheltered doorway?
The deciding factor is who can reach the wall. Under a covered porch with staff close by, a simpler open frame will do the job. Where the position sits unstaffed, at street level or open to weather, the key lock and the gasket sealing both pay for themselves inside the first winter.
How do I keep a poster readable in direct sun and under shop lighting?
The anti-glare treatment on the PET screen scatters reflected light, so a poster stays readable in low winter sun and under downlighters. Untreated clear covers mirror the sky at certain angles and wash the artwork out. UV stabilising also stops the screen yellowing and clouding over months of exposure.
Is this lockable notice case available with free UK delivery?
Yes. Free UK mainland delivery applies to this lockable notice case, with a 28 day returns window. Displaysense has supplied UK businesses with display products since 1978 from a base in Hertfordshire, covering shopfronts, surgeries, schools and hospitality venues right across the country.
Is this poster case available in silver or in other sizes?
Yes. A satin silver A3 is stocked alongside this one, and the brushed finish tends to sit better on pale stone, on a glazed unit or against a modern civic building. Larger A2, A1 and A0 formats follow in satin black. Every version carries the same lock, gaskets and PET screen.

Outdoor Signage, Placement and Getting a Frontage Noticed

A locked case protects the sheet inside, but the position on the wall and the wording on the page decide whether anybody stops long enough to read it. Height, sight lines, competing glass and the message itself all pull in the same direction. The Displaysense guides below cover choosing a spot for a poster, keeping outdoor signs legible through a British winter, and turning a plain frontage into something passers-by actually act on.

Everything you need to know

Details, specs and delivery

Overview

Description

Specifications

Delivery & Returns

FAQs

Knowledge Hub

Overall rating: 4.8333335 / 5 from 12 reviews.

AI Generated Review Summary

Summary topics

Review topics: ["service","quality","delivery","frame","screws","looks"].

Review highlights

Reviews

Well made locking poster case

"The locking poster cases were well made and arrived fast"

Malc T. (5/5)

Good service

"Good service"

Electronic L. (5/5)

Excellent display cases and good

"Excellent display cases and good customer service. Fixings are rubbish but that’s normal - cheap low-grade screws which shear off when being tightened. Just used decent screws!"

David G. (4/5)

Nice Lockable Poster Frames

"Nice quality Lockable Easy Fast delivery Thanks"

Nick B. (5/5)

Perfect! Great quality and speedy

"Perfect! Great quality and speedy service and delivery."

Robert K. (5/5)

Looks smart

"Great service from Display Sense"

Anonymous  (5/5)

Smart and Strong

"Smart and Strong"

Carole N. (5/5)

Very good

"Very good"

Vero (5/5)

Classy and easy to use

"Classy and easy to use item"

Red C. (5/5)

Frames look very professional and

"Frames look very professional and sleek. The only downside is their lack of protective packaging for transport."

Chris (4/5)

Q&A

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FAQ

A3 lockable poster cases are compact yet effective, offering a professional solution for displaying posters and announcements. Perfect for indoor and outdoor use, these cases combine functionality with a sleek design. Pair them with other display products like snap frames or leaflet holders for a cohesive setup.

Yes, we offer special pricing for bulk purchases of A3 lockable poster cases. Check the product page for volume discount details. For larger orders, contact us directly to receive a personalised quote tailored to your needs.

Delivery times and costs vary based on your location and the size of your order. Visit our delivery page for the latest shipping rates and estimated timelines.

Yes, our A3 lockable poster cases are suitable for both indoor and outdoor use. They feature weatherproof seals to safeguard your posters against rain, wind, and other elements. For additional outdoor display solutions, explore our durable pavement signs and weather-resistant chalkboards.

Yes, we offer custom printing services for A3 posters. Visit our printing services page, select the A3 size, upload your design, and place your order. Your posters will be printed to fit your A3 lockable case perfectly. ,

Keeping your A3 lockable poster case in great condition is simple. Wipe it clean with a damp cloth as needed. Each case includes a UV-resistant cover that protects your posters from fading and ensures your display remains sharp and professional.

A3 lockable poster cases are ideal for displaying smaller posters, advertisements, or notices in environments such as retail stores, offices, schools, restaurants, and public spaces. Their secure, weatherproof design makes them a reliable choice for both indoor and outdoor use, while allowing for easy updates.

To request a return, contact us at help@displaysense.co.uk for prior approval. All returns must be authorised in advance. Refunds will cover the cost of the product plus VAT. For full details, review our terms and conditions on our website.