This floor and roof panel lifting device is by far the safest because it has legs supporting the panels from underneath, as well as top pressure clamps and chains. The only drawback comes when you get to the last panel; it must be laid and then slid into position because the lifting gear gets in the way of setting directly in place on the wall. This model is capable of lifting panels from 14" to 24" wide and up to 675 kg (1500 lb).