NBS Source
I'm a manufacturer

BL-ZBOX Retractable Ladder with Trap Door

Verified by manufacturer 10 days ago

Bilco UK

Industrial grade retractable aluminium ladder with laminated, insulated trapdoor.

Jump to:
BIM object icon
+44 (0)1284 701696 Website

Application

Designed for use in areas where the floor space must be kept clear such as schools and hospitals.

Description

Industrial standard retractable ladder designed for easy installation and fitted with heavy duty counter balancing springs to provide safe and controlled operation. The product also benefits from a timber lining and trapdoor to enclose the ladder from the underside.


Available with 30 or 90 minute fire ratings, the hatch box and trap door feature a hollow metal design that is fabricated from 1.5 mm steel and insulated with mineral wool insulation (38 mm thick - 30 minute fire rating, 75 mm thick - 90 minute fire rating). The lining features a flange around both the ceiling and the trap door to help prevent flame and smoke penetration, and the ceiling flange is 29 mm wide whilst the flange around the trap door opening is 15 mm wide.


Features and benefits:

  • Lift assistance: Two heavy duty springs are incorporated into pivot brackets to counter-balance the ladder weight.
  • Manufactured to BS EN 14975 (DN 4570) standards.
  • Lining depth: 500 mm from the underside of the hatch to the trap door in the closed position.
  • Load bearing: 200 kg per tread - overall unit 500 kg/m².

General information

Color

Other

Finish

Varnished

Mill

Material

Aluminium

Die-cast aluminium alloy.

Wood

The lining and trap door are fabricated from 18 mm thick laminated wood.

Warranty description

Manufacturer's warranty.

-

Uniclass

Pr_25_30_85_03 Aluminium loft laddersPrimary

CAWS

L30/41 Loft ladders

L30/421 Loft ladders

Specification data - Aluminium loft ladders

Standard

To BS EN 14975.

DN 4570.

Handrails

Not required.

Telescopic.

Requires a minimum ceiling opening length of 1000 mm. Additional steps are also available to installation above the ceiling opening.

Treads

Typical tread rise 277 - 280 mm.

200 mm.

Depth: 140 mm.

250 mm.

Depth: 140 mm.

300 mm.

Depth: 140 mm.

350 mm.

Depth: 140 mm.

380 mm.

Depth: 140 mm.

430 mm.

Depth: 160 mm.

530 mm.

Depth: 160 mm.

580 mm.

Depth: 160 mm.

Loft trap door

-

Operating mechanism

Electric.

Manual.

Topside.

Type

BL-ZBOX-1.

Size: Up to 2500 mm, number of treads: 9, minimum hatch length: 750 mm.

BL-ZBOX-2.

Size: 2501–2790 mm, number of treads: 10, minimum hatch length: 800 mm.

BL-ZBOX-3.

Size: 2791–3090 mm, number of treads: 11, minimum hatch length: 900 mm.

BL-ZBOX-4.

Size: 3091–3390 mm, number of treads: 12, minimum hatch length: 1000 mm.

BL-ZBOX-5.

Size: 3391–3690 mm, number of treads: 13, minimum hatch length: 1300 mm.

Show more

Fire rating

Non-fire rated.

FD30.

30 minutes.

FD90.

90 minutes.

Trap door and lining

Varnish coating.

Available to protect the wood.

Manufacturer's standard.

Operation

Electric.

Optional, trap door and stair can be open and closed with a simple push of a button.

Manual.

Standard.

Topside.

Optional, supplied with a cable/pull ring for access from above.

Accessories

None.

Additional steps.

Available for installation above the ceiling opening.

Insulated trap door and lining.

Supplied with 63 mm thick insulation. Can also be supplied with a lining depth up to 860 mm, insert requirements.

BIM objects

BIM object icon

NBS BIM object standard

This BIM object has been authored to meet the requirements of the NBS BIM object standard.

Find out more about the NBS BIM object standard.

Platform Compatible Version
IFC

IFC2X3

2

Revit

Revit 2016

3

Similar products from Bilco UK

BL-Z Retractable Ladder

BL-Z Retractable Ladder

Ladder Up® Safety Post

Ladder Up® Safety Post