The Acudor FA-300 series aluminum floor access doors are designed for interior and exterior applications where water tightness is not required. The angle frame construction with integral anchor flange is designed to cast into concrete. The diamond plate door panel is equipped with a flush aluminum drop handle and an automatic hold open arm with red vinyl grip. Material: Aluminum door and frame: stainless steel hinges and hardware. Door: 1/4" aluminum diamond plate reinforced for live load of 300 pounds/sq.ft. Frame: Angle frame fabricated from aluminum extrusion with an integral 1" anchor flange. Hinge: Stainless Steel butt hinges with tamperproof stainless steel bolts and nuts. Opening Device: Automatic hold open arm with red vinyl grip allows door panel to open to 90 degrees, locking door in open position, and allowing for easy control when closing door panel. When required, stainless steel compression springs can be provided to add lift assistance. Latch: Flush aluminum drop handle with staple for padlock. Finish: Mill finish, with optional bituminous coating on exterior of frame.