The DOLLE BD 90 is tested and meets the requirements of EN 4102-2: 1977-09, it can withstand 90 minutes of exposure to fire.
The loft ladders trapdoor is insulated with 50 mm rockwool and has 10 cm plasterboard on each side. The BD90 fire-resistant loft ladder comes with a double lock for easy and safe operation with a pole.
The DOLLE BD90 loft ladders have non-slip steps with plastic feet to provide extra security and to protect the floor covering.
|Outside casing||117.5 - 147.5 × 57.6 - 79 cm*|
|Opening size||120 - 150 × 60 - 81.4 cm**|
|Floor-to-ceiling height||218 - 336 cm***|
|Casing height||19 - 80 cm|
|Tested u-value||0,69 W/(m2K)|
|Insulation||50 mm Rockwool|
|Fire approved||BD90 fire approved - DIN 4102-2|
|Maximum load||150 kg, EN 14975|
|Air tightness||Class 4|
* Outside casing must max. be width x length = max. 1.0672 m2.
** Opening size must max. være 1,125 m2.
*** 13 treads ladder is used at a ceiling height of max. 305 cm, 14 treads ladder is used at a ceiling height of max. 336 cm. In both cases the casing length must be min. 137.5 cm.