I want to install the stairs between the living space and attic. Attic - unheated, so I need a ladder to insulated hatch. What do you advise?

Attic stairs FAKRO which firms (LWS-Smart, LWK-Komfort, LDK-dvusektsionnaya sliding attic stairs) are equipped with insulated hatch (the thickness of the cover with a heater-36cm). The presence of the lid konturuplotneniya to avoid heat loss. Secure lock, hidden deep in the face of the manhole, the manhole cover securely.
In areas where the difference between residential and nonresidential facilities are too significant, it is recommended to install a ladder LTK-Termo. The main difference between the stairs LTK-Termo from other models of loft ladders, hatch cover is thick (66mm) with high thermal insulation svoystvami.Takzhe as models LWS-Smart, LWK-Komfort, stairs LTK-Termo equipped konturuplotneniem and the original lock.