The lower rail is made with in press-folded galvanized steel, at the center of which is fixed a drawn round bar in C42 steel where the sliding wheels moved. The lower rail will be perfectly aligned and leveled.
The Levriero model has 4 different thicknesses for the leaves that compose it: 52 - 100 - 140 - 190 mm.
The Upper rail made of double aluminum alloy profile EN-AW-6082, suspended with bolted brackets that allows easy alignment and leveling (GammaDoors's patent).
Locks equipped with silver-tropicalized steel rods and nylon track reinforced with fiberglass and Teflon. Sturdy, smooth-running and silent.