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Type BL-ZBox Retractable Ladder with Trap Door Product Image
Retractable Ladders
TYPE BL-ZBOX Retractable Ladder with Trap Door

The BILCO industrial grade BL-ZBOX Retractable Ladder features heavy-duty counter-balancing springs to enable safe and controlled operation, and is supplied with timber lining and trapdoor to enclose the ladder from the underside.

Die-cast Aluminium alloy Retractable Ladder to EN 14975 designed for use with the CS-50TB Roof Access Hatch.

BL-ZBOX Retractable Ladder

Features / Benefits

Constructed with corrosion-resistant materials to provide many years of trouble-free, dependable service.

Available in standard or bespoke sizes to satisfy many access requirements or installations.

Fully compliant to EN 14975

Designed for use with the CS-50TB Roof Access Hatch.

TYPE BL-ZBOX RETRACTABLE LADDERS

BL-ZBOX-1 height: < 2500mm / No. treads: 9 / tread size* 350x140mm / min hatch length: 1000mm

BL-ZBOX-2 height: 2500 - 2790mm / No. treads: 10 / tread size* 350x140mm / min hatch length: 1000mm

BL-ZBOX-3 height: 2791 - 3090mm / No. treads: 11 / tread size* 350x140mm / min hatch length: 1000mm

BL-ZBOX-4 height: 3091 - 3390mm / No. treads: 12 / tread size* 300x140mm / min hatch length: 1000mm

BL-ZBOX-5 height: 3391 - 3690mm / No. treads: 13 / tread size* 300x140mm / min hatch length: 1300mm

BL-ZBOX-SS Manufactured to special size on request

* alternate tread sizes are available - please contact us. (Note: 250mm wide treads do not comply to EN 14975 standards)

Handrail BL-Z ladders are supplied with a standard telescoping handrail on one side*

An additional handrail for the opposed side can be supplied if specified* 


*Handrail requires a minimum ceiling opening length of 1000mm.

OPTIONS

Additional Handrail 
An additional handrail for the opposed side can be supplied if specified.

Insulated Trapdoor and Lining
Supplied with 63mm thick insulation. 

Increased Lining Depth
Can be supplied with lining depth up to 860mm.

Topside Operation
Supplied with a cable/pull-ring for access from above.

Electronic Operation (TYPE BLZ-BOXE)
Trapdoor and stair can be opened and closed with a simple push of a button (see video).

Varnish Coating
Available for trapdoor and lining to protect the wood.

Additional Steps
Available for installation above the ceiling opening (see illustration).

Performance Standards BL-ZBOX Retractable Ladder

COMPLIANCE EN 14975
picture of the Bilco BL-ZBOX retractable ladder with trapdoor, ladder backboard and a roof access hatch

Downloads BL-ZBOX Retractable Ladder

BIM Model (.zip)

External Resources / Links

BIM Objects

Guide Specification BL-ZBOX Retractable Ladder

LADDERDie-cast Aluminium alloy
TRAP DOOR18mm laminated wood (see options for fire rated box construction and insulated trapdoor/lining)
LINING500mm from the underside of the hatch to the trapdoor (in the closed position)
LOAD BEARING200kg per tread / Overall unit 500kg/m²
TREAD SIZEAvailable widths(mm): 200, 250, 300, 350, 380, 430, 530, 580. 200-380mm width tread depth = 140mm. 430-580mm width tread depth = 160mm
TREAD RISETypical tread rise 277-280mm (subject to floor-to-ceiling height)
LIFT ASSISTANCETwo heavy-duty springs incorporated to pivot brackets to counter-balance ladder weight on open/close.

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