Red safety barrier with “Danger – Keep Out” printed webbing placed in front of an industrial facility with fencing and machinery in the background.
Single red retractable barrier post featuring “Danger – Keep Out” webbing on a plain white background.
Red retractable barrier with “Danger – Keep Out” webbing, showcasing product features such as floor protection, universal belt end lock, and indoor-outdoor use.
Red retractable barrier post with “Danger – Keep Out” webbing, displaying dimensions including height, belt width, base diameter, and webbing length.

Red Outdoor Safety Retractable Barrier - 3.4m 'Danger Keep Out' Belt

Product code: BQ450D
Most safety wording relies on somebody choosing to look at it. A notice screwed to a wall, a laminated sheet on a door, a sign on a stand beside a wa...
Inc. VAT £69.00 Ex. VAT £57.50
Post Finish - Red
Belt Colour - Danger Keep Out
In Stock - UK Despatch

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At a glance

The Displaysense BQ450D is a safety barrier, 1015mm high by 3400mm wide by 355mm deep, with a red, white steel construction. 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.
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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.
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Overview

Description

Specifications

Delivery & Returns

FAQs

Knowledge Hub

Block a Hazard With a Danger Keep Out Barrier

A sign on a wall gets walked past. A belt across the route does not. The BQ450D is both at once, a single retractable belt printed Danger Keep Out that blocks the way people would walk and carries the warning at the height they are already looking. Nobody has to notice it, because they have to deal with it. A single belt keeps each post to one job, so a site facing several hazards shuts them all the same morning instead of doing one properly and the rest with tape. Red powder coat covers the steel post, and the galvanised base carries concrete inside it for weight. Passed for inside and outside work. Best suited for construction sites, maintenance teams and event crews marking hazards that people must not walk into.

How a Danger Barrier Post Stops People Walking In

  • The warning is in the way, not on a wall: Signage only works if somebody looks at it. A belt printed Danger Keep Out sits across the route itself, so it is read in the act of being stopped. That is the difference between a warning people notice and one they walk past.
  • White text on red, the clearest pairing: Red carries the meaning before a word is read, and white on red is the highest contrast combination in common use for safety wording. It stays legible in poor light, in rain and at the sort of distance a printed sign would already have given up at.
  • One post covers one closure: Sites rarely have a single hazard. They have several, and each needs its own line. A one belt post is the simplest unit to think in, so working out what a whole site needs comes down to counting the closures rather than the parts.
  • Belt returns under a brake: A torque spring holds the belt steady at any length and a brake slows it coming back, so letting go does not send it flying into a hand. On a site where the same line opens several times a shift, that is worth more than it sounds.
  • Locking clip on the belt end: Nothing short of a deliberate squeeze and pull will free the clip from its seat. A belt working loose on its own leaves a hazard standing open with nobody the wiser. The same clip mates with rival posts, so a few of these slot into whatever a site already runs.
  • Galvanised base, powder coated post: Zinc bonded into the base and a hard coat over the post, each chosen for what that part goes through. Between them a run stays standing outdoors instead of being carried in nightly. Rubber facing beneath bites on wet ground and spares a finished floor indoors.

Where a Single Belt Hazard Barrier Is Used

Construction and GroundworksExcavations, open service trenches, reinforcement starter bars and areas under a lifting operation. The wording does the job of a supervisor who cannot stand at every hazard at once, and it stays readable after a week of site dust.
Maintenance and Engineering TeamsA machine opened up, a panel removed, a roof hatch left unlocked or a tank being drained. Put the line out as the work begins and lift it once the guard is back on, with nothing fixed down and no marking left on the floor afterwards.
Utilities and Highways CrewsChambers open at the kerb, cable pits, jetting work and anything left exposed while a crew goes for materials. Passers by get the message without a marshal standing there repeating it to each one.
Warehouses and DistributionRacking damaged and awaiting repair, a leak under investigation, or a section taken out of use after a near miss. The belt states the area is dangerous rather than simply closed, which changes how staff treat it.
Events, Festivals and ProductionGenerator compounds, cable ramps, rigging points and anywhere the public would be at risk. Posts ride to site in the van, stand up without a tool being opened, and are gathered back in once the build is struck.
Schools, Hospitals and Public EstatesWork carried out while a building stays open, where the people walking past include those least likely to read a notice on a wall. The belt is in front of them rather than above their heads.

A Second Belt, or Stripes Instead?

With the public about, a lower line is worth having, and the Danger Keep Out post with two belts repeats the wording underneath. Where the area needs marking rather than forbidding, the red and white striped version signals a hazard without stating one. Caution Do Not Enter is printed too.

Covering a whole site? Call 01279460460 or list the hazards you are shutting off and we will send the numbers over.

The Displaysense BQ450D is a single belt Danger Keep Out retractable safety barrier, known also as a hazard barrier post, a printed belt barrier or a danger barrier stanchion. It serves as signage and as a physical obstruction together, since the printed belt crosses the line of travel and holds the warning at eye height instead of on a wall nobody glances at. White lettering on a red ground is the sharpest contrast pairing in common safety use, holding up in dull light and rain. One belt to a post, reaching 3.4m. A sprung drum holds the belt at steady tension however much is drawn out and governs its belt will not fly. Its locking end clip mates with rival posts. Height 1015mm, steel under red powder coat. The 355mm base is galvanised, weighted with concrete and faced beneath in rubber that bites wet ground and spares indoor flooring. 9kg complete. Passed for inside and outside work. Specified by construction firms, maintenance and engineering teams, utilities and highways crews, warehouses and distribution centres, event and production companies, and across schools, hospitals and public estates. Sister builds carry two belts, or swap the wording for Caution Do Not Enter, or use red and white stripes. Free UK mainland delivery. Displaysense, UK display product specialists since 1978.

Most safety wording relies on somebody choosing to look at it. A notice screwed to a wall, a laminated sheet on a door, a sign on a stand beside a walkway. All of them can be walked past by a person thinking about something else, which is most people most of the time. A printed belt takes that choice away. It crosses the line of travel in front of somebody looking straight ahead, and it has to be unclipped, ducked or stepped over before anybody gets past it. The warning is read during the pause it creates.

White lettering on a red ground is the highest contrast pairing in general use for safety wording, which is why it turns up on fire equipment, prohibition signs and stop markings. Contrast is what decides legibility at distance, not letter size, and a high contrast belt stays readable in dull weather, at dusk and under the flat light of a warehouse roof. Red also does work before any reading happens, because it is the colour people associate with prohibition rather than caution.

Sites almost never have one hazard. A groundworks job might have an open trench, a plant crossing point and a stack of materials leaning where nobody should stand, and all three need closing at once. Working in single belt posts makes that arithmetic simple, because one post plus one belt reaches across to the next fixed point and each closure is counted on its own. Two posts and one belt shut a gateway. Three posts and two belts cover a trench and turn a corner at the end of it.

Galvanising and powder coating are different processes doing different jobs, which is why a barrier gets both. Galvanising bonds zinc into the surface of the steel base, so a scrape does not expose bare metal underneath and start a rust spot. The base needs that because it is the part standing in whatever water collects on the ground. Powder coating is a tougher finish applied over the post, chosen for the part that gets handled, loaded into vans and set down on hard surfaces.

What Ships with This Hazard Barrier Post

  • 1 x steel post finished in red powder coat, with one belt cassette on board
  • 1 x Danger Keep Out belt, white print on red, with a locking end clip
  • 1 x galvanised base weighted with concrete, faced beneath in rubber

Counting Posts for a Site

Work through it closure by closure rather than as one total. Each line needs a post at both ends, a post at every corner, and something solid to finish against. Send us the list of hazards and we will put the numbers together, spares included.

Ordering for a depot? Call 01279460460 or give us the details.

The Displaysense BQ450D is a Danger Keep Out single belt retractable barrier, also called a hazard barrier post or printed safety barrier. It functions as signage and as a physical barrier together, since the belt crosses the route in front of anyone walking it and is read during the pause it creates, unlike a wall notice that can be walked past. White lettering on red is the highest contrast pairing in general use for safety wording, holding legibility in dull weather and at dusk. Belt length 3.4m, one per post. A torque spring maintains even tension at any extension and a brake slows the return. The belt end clip locks and fits most other makes. Post 1015mm, red powder coated steel, chosen for the part that gets handled. The 355mm base is galvanised, which bonds zinc into the steel so a scrape does not start rust where the barrier stands in water, and is filled with concrete and ringed with rubber underneath. 9kg total. Indoor and outdoor. Chosen by construction, maintenance and engineering teams, utilities and highways crews, warehouses, events and public estates. Twin belt, Caution Do Not Enter and striped belt versions exist. Free UK mainland delivery. Displaysense, UK display product specialists since 1978.

Full specification for the single belt Danger Keep Out retractable barrier. Figures apply to a single post complete with base. Think in closures rather than posts, allowing two for each line you need, one more wherever that line turns, and a couple spare for awkward days.

3.4m
Belt Reach
Universal
End Clip
Galvanised
Steel Base
1015mm
Post Height
9kg
Total Weight
Specification Detail What This Means for You
Belt WordingDanger Keep Out, white on redDeclares the area dangerous rather than merely shut, which is the wording to reach for when crossing the line would put somebody at genuine risk of injury.
Belts CarriedA single retractable beltEach post handles one closure. A site facing several separate hazards works through them one at a time instead of building a single elaborate layout.
Belt Reach3.4mHow far one post throws its belt to the next fixed point. Draw less out on a turn, since a tighter belt sags less and tugs its post around less.
ColourRed post, white lettering on a red beltRed registers as a warning before anything is read, and the white on red lettering is the sharpest contrast pairing in common safety use.
Belt ReturnSprung drum, governedTension stays even however much is drawn out, and the return is slowed, so a belt let go of will not fly back into the hand that released it.
Belt EndUniversal end clipMates with rival posts already standing on site, and stays seated until deliberately freed, so a closure will not fall open unnoticed.
Post1015mm, red powder coated steelPowder coat is the harder wearing of the two finishes, put on the part that gets gripped, lifted into vans and dropped onto hard ground.
BaseGalvanised, concrete weighted, 355mm acrossZinc is bonded into the steel by galvanising, so a scrape will not seed rust where the barrier sits in standing water. Concrete supplies the mass.
Base UndersideAnti-slip rubber facingBites into wet ground so the post is not dragged as a belt tightens, and keeps bare metal clear of a finished floor whenever the barrier comes inside.
Total Weight9kgTwo posts to a pair of hands. A set of six covering a whole site is walked out in three journeys with nobody called over to lend a hand.
Suitable ForInside and outside workPassed for both, so one barrier answers for a plant room and for an open compound, and a depot avoids carrying two separate lines of stock.
Other VersionsTwin belt, Caution Do Not Enter, striped beltA lower second belt for public areas, gentler wording where the issue is access rather than danger, or stripes where an area is being marked.

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 Hazard Barrier Posts

Q: Which barrier is best for marking out a hazard on a worksite?

A: For marking out a hazard on a worksite the BQ450D is the one to pick, a one belt post whose 3.4m belt reads Danger Keep Out in white lettering. It blocks the way through and puts the warning directly in front of anyone approaching, working as signage and as an obstruction in the same object.

Q: How does a printed warning belt barrier work?

A: The belt is wound on a sprung drum housed in the post. Draw it across, seat the universal end clip in the next post, and the wording spans the route in front of anyone walking it. Tension stays steady however much is out, and the return is governed so the belt will not fly back at whoever released it.

Q: Does a barrier stop people better than a warning sign?

A: It asks less of them. A notice on a wall is only read by somebody who chooses to look up, whereas a belt spans the route and has to be unclipped, ducked or climbed over before anyone gets past. The warning lands in the pause that creates, which is the one moment somebody is actually paying attention to it.

Q: Are hazard barrier posts suitable for events and festivals?

A: Yes. Production crews reach for the BQ450D around generator compounds, cable ramps and rigging points, and anywhere the public would otherwise wander into risk. Posts ride to site in a van, stand up without a tool being opened, and at 9kg apiece one person manages two.

Q: Do hazard barriers suit schools and hospitals?

A: Yes, and it suits work done while a building carries on around it. Among the people passing are those least inclined to read a notice fixed above head height, and a belt puts the wording directly in front of them instead. Nothing is screwed into the floor.

Q: Why is safety wording printed white on red?

A: White on red gives the sharpest contrast pairing in common safety use, which is why fire equipment and prohibition signs share it. Contrast governs how far away lettering stays readable, more so than its size, so the belt holds up in dull weather, at dusk and under flat warehouse lighting.

Q: How tall is a hazard barrier post and what does it weigh?

A: The belt reaches 3.4m, the post stands 1015mm and the base spans 355mm. Complete, it comes to 9kg. Nearly all of that mass is concentrated low down, which is why a pair travels in one set of hands and six cover a site in three journeys.

Q: One belt or two: which Danger Keep Out barrier do I need?

A: The BQ450D runs a single belt, which suits a site shutting off several hazards where getting round them quickly counts. The two belt build adds a lower line, sealing the gap people step through and repeating the wording where a child would read it. Pick two where the public is about.

Q: Should the belt carry wording or stripes?

A: Wording is for a hazard that would genuinely injure, because it declares that outright. The red and white striped build flags a hazard without naming it, which fits an area being marked out rather than forbidden. Pick wording when crossing the line carries real consequences.

Q: Will a retractable barrier survive being left outdoors?

A: Yes. Galvanising bonds zinc into the base, so a scrape will not seed a rust spot where the barrier sits in whatever water collects on the ground. Over the post goes powder coat, the harder wearing of the two finishes, put where the gripping, lifting and setting down all happens.

Q: Does this hazard barrier come with free UK delivery?

A: Yes, and a 28-day returns policy comes with it. Displaysense has kitted out UK sites with display and safety products since 1978. Trusted by construction, utilities and facilities teams nationwide, and replacement belt cassettes are held in stock separately.

Q: Is there a version with different wording on the belt?

A: Yes. Caution Do Not Enter covers an area that is off limits without being dangerous, and red and white stripes handle hazards being marked rather than forbidden. Each comes as a one or two belt build sharing the same post, base and mechanism.

Hazard Marking and Site Signage

A barrier is one part of telling people where not to go. What else is marking the area, how the route around it is signed and how a crowd is expected to move all decide whether a closure is respected or treated as an obstacle to get past. These guides cover barrier types, signage that works at an event, moving a crowd safely, and what signing a 960 acre venue actually took.

Everything you need to know

Details, specs and delivery

Overview

Description

Specifications

Delivery & Returns

FAQs

Knowledge Hub

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