Fire resistant loft ladder ? made to measure with 50 mm insulation - BD 90
DOLLE BD 90 is fire tested from above and from below with a fire resistance of 90 minuts.
DOLLE BD 90 is tested according to DIN EN 4102-2: 1977-09
The trapdoor is insulated with 50 mm rockwool+ 10 cm gypsum board on each side. The BD 90 loft ladder is delivered with a double latch lock for easy and safe operation together with the wooden push/pull rod. The loft ladder has a nice finish with white faced trapdoor and whitepainted wooden architraves. DOLLE BD 90 loft ladder has non-slip treads and plastic feet for extra security and is delivered with a draught excluder which reduces the loss of heat.
- Opening size: 120-150 x 60 - 81.4 cm
- Outer casing dimension: 117.5 - 147.5 x 57.6 - 79 cm
- Floor-to-ceiling height above 288 cm - casing length must be 137,5 cm or more
- Max floor to ceiling height: 336 cm
- Min floor to ceiling height: 218 cm
- Ladder material: wood
- Casing material: Blockboard and gypsum board - Min. 19 cm ? Max. 80 cm
- Casing thickness: 3.8 cm
- Trapdoor thickness: 7 cm
- Insulation: 5 cm
- Tread thickness: 1.8 cm