Available in the size: 120x70 cm. Achieve even better insulation with top casing and lid, which is selected in dropdown. With patented clickFIX® technology, you avoid cold bridges. U-value with top casing and lid: 0.56 W/m2*K.
The insulation; the two sealing strips in the frame and a construction of trapdoor without wood prevent heat loss. The 2 sealing strips provide an extra tightness, which means, among other things, that the loft ladder have no cold bridges. It provides a good saving on the heating bill compared to traditional loft ladders. DOLLE clickFIX® 56 PRO is insulated with 50 mm expanded polystyrene (EPS) standard U-value: 0.64 W/m2*K. If the model is extended with a top casing and lid, the U-value is reduced to only: 0.56 W/m2*K. (This U-value is calculated). The low u-value is particularly remarkable, as all the products have been tested as a building component similar to doors and windows. Usually, u-value indications are given as a calculated center value for the trapdoor, which is misleading in connection with energy calculations. The loft ladder have been tested at the IFT Rosenheim Institute for both U-value and air tightness.
DOLLE clickFIX® is the market's most unique loft ladder series on the market. The patented clickFIX® technology provides fantastic insulation value and is designed for easy installation. It is designed so that the ladder and the trapdoor easily can be replaced with the clickFIX® system. Click mounting can be done without use of special tools. The loft ladder can be mounted by one person as the loft ladder's weighs about 25% less than traditional loft ladder.
The extra strong ladder has a pine tread of 8.3 cm and 6.9 cm non-slip beech tread, which provides a good comfort. The 3-part ladder has 12 treads and a ladder width of 35.8 cm. The ladder is finished with grey plastic feet, to protect the floor covering. The strength of the entire loft ladder is tested according to EN 14975 which has a max. user weight of 150 kg, but tests the stairs up to 265 kg.
An extension for the loft ladder can be purchased. It allows for an extra ceiling height up to 323.4 cm - max. 14 steps. The extension joint is 47.2 cm long and has the same width as the ladder of 38.8 cm.