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The loft ladder is manufactured with top-insulation. Two sealing strips in the casing and a trapdoor construction 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. 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 stringer 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.
Max floor-to ceiling height 120 x 70: 2803 mm.
Max floor-to ceiling height 115 x 55: 2731 mm.
Vapour barrier with TwinActive-foil seals your product for optimal heat-insulation. Easy to attach.
Optional accessories:
Plastic feet, architraves and handrails are not included as standard.
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| Product number | Please select a variant |
| Opening size (length) | Please select a variant |
| Opening size (width) | Please select a variant |
| Floor-to-ceiling height | Please select a variant |
| Total going | Please select a variant |
| Swing clearance | Please select a variant |
| Horizontal clearance | Please select a variant |
| U-value (W/m²* K) | 0.6400 |
| Attic ladder type | Folding ladder |
| Usage | Manual |
| Sections | 3-section |
| Ladder material | Wood |
| Trapdoor material | Sandwich construction |
| Trapdoor thickness | 56 mm |
| Insulation | 50 mm |
| Casing thickness | 18 mm |
| Outside casing (length) | Please select a variant |
| Outside casing (width) | Please select a variant |
| Casing (height) | Please select a variant |
| Number of treads | Please select a variant |
| Tread rise | 235 mm |
| Tread material | Solid beech |
| Tread thickness | 17.5 mm |
| Tread width | Please select a variant |
| Tread depth | 69 mm |
| String material | Pine |
| String thickness | 21 mm |
| String depth | 83 mm |
| Maximum load | 150 kg |
| Product weight | Please select a variant |
| Tested | Please select a variant |
