The F30 and F60 are tested from below whilst the F30 Plus is 30 minute fire resistant from above as well as below. The insulated trapdoor is of a sandwich construction with a U value of 0.92 W/m2K.
The F30 trapdoor is 65 mm thick and the F60 trapdoor is 71 mm thick – both are white coated.
The Mini Line is Class 4 airtight to DIN EN 12207 and manufactured to DIN EN 14975 with a load bearing per tread of 150 kgs and 350 kgs on the overall structure. The fire resistance tested to DIN 4102-2.
The stairway currently has a floor to ceiling height range of 2250 mm to 2750 mm, with the hatchbox available in the standard sizes of 1100 mm x 600 mm or 700 mm and 1200 mm x 600 mm and 700 mm. The hatchbox/lining depth is a standard height of 220 mm.
The optional accessories for this stairway can include a telescopic handrail, cylinder lock and 3 side Upper Level Guardrail. Premier Loft Ladders will be pleased to offer a full quotation on application.