The main difference between enhanced and luxury loft retractable stairs of a different material reinforced attic stairs is to use S-bend made of 2mm thick steel plate stamping; luxury attic stairs is the intensity of the use of steel stamping made of 1.5mm thick S bend. 2, different enhanced attic stairs carrying 260 kg load on, luxury loft ladder load 200 kg. When attic stairs telescopic installation requires the installation of the thickness of the wall of the attic stairs, floor thickness should be 150mm, connecting stairs bracket with screw plate caught with four corners; a frame mounting holes and tighten the screws, cut off the excess wire head cover decorative plates, retractable stairs to check whether the various parts are loose, such as normal, can be used. If less than 170mm, should underlay board platen; if the floor particularly thick, The conditions permitting, use the following methods: floor length direction than in the longitudinal direction of the entrance stairs extend 200mm opening, extending sealed section below, do the middle floor first-order transition stepping; Note: design floor near the corner of the mouth, the edge of the hole to set aside more than 100mm from the wall to prevent the attic stairs bracket flange collision, the impact of the installation.