Material: Steel- 14 gauge galvanneal steel curb and cover with 22 gauge galvanneal steel liner. Aluminum – 11 gauge aluminum curb and cover with 18 gauge aluminum liner
Finish: Gray texture powder coat on steel, silver texture powder coat on aluminum.
Gasket: Continuous bulb neoprene door seal.
Insulation: 1” polyisocyanurate (R-6) on curb and in cover.
Hinges: Heavy-duty galvanneal steel or aluminum hinge with bolt pin
Hold-Open Arm: Clear zinc-plated steel hold-open arm with red plastic coating
Latch: Single or two point, zinc-plated steel slam latch.
Springs: Pressure intensifiers with compression spring provide lift assistance.