Type Concertina loft ladders
Material Aluminium
Min. opening size 750
No. of treads 9-13
Min. floor to ceiling height 2500
Max. floor to ceiling height 3690
 
 
 

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

Specifications

  • References: The BL-ZBOX model is manufactured to EN 14975 (DN 4570) standards.
  • Materials: The ladders are manufactured from die-cast aluminium alloy. The lining and trap door are fabricated from 18mm thick laminated wood (see options for fire rated box construction and insulated trap door and lining).
  • Depth of Lining: 500mm from the underside of the hatch to the trap door in the closed position.
  • Load Bearing: 200kg per tread - overall unit 500kg/m2
  • Tread Size: Available in widths (mm) of 200, 250, 300, 350, 380, 430, 530, 580. Treads that are 200-380mm wide are supplied with a depth of 140mm. 430-580mm wide treads have a depth of 160mm.
  • Tread Rise: Subject to the floor to ceiling height. The typical tread rise will be between 277 - 280mm.
  • Lift Assistance: Two heavy duty springs are incorporated into pivot brackets to counter-balance the ladder weight.


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

Specifications

  • References: The BL-ZBOX model is manufactured to EN 14975 (DN 4570) standards.
  • Materials: The ladders are manufactured from die-cast aluminium alloy. The lining and trap door are fabricated from 18mm thick laminated wood (see options for fire rated box construction and insulated trap door and lining).
  • Depth of Lining: 500mm from the underside of the hatch to the trap door in the closed position.
  • Load Bearing: 200kg per tread - overall unit 500kg/m2
  • Tread Size: Available in widths (mm) of 200, 250, 300, 350, 380, 430, 530, 580. Treads that are 200-380mm wide are supplied with a depth of 140mm. 430-580mm wide treads have a depth of 160mm.
  • Tread Rise: Subject to the floor to ceiling height. The typical tread rise will be between 277 - 280mm.
  • Lift Assistance: Two heavy duty springs are incorporated into pivot brackets to counter-balance the ladder weight.


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Bilco UK Ltd
No 20 Park Farm Business Centre
Fornham St Genevieve
Bury St Edmunds
IP28 6TS
Tel: 01284 701696
Fax: 01284 702531
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Type BL-Z retractable ladder (optional retractable door)