Amstep Model 508A, 8 inches wide, 90 degree return angle (flat back without bevel). Tread 9/32 inch thick with lip 1-1/8 inch from underside, holes drilled and countersunk. The abrasive filler shall consist of a mixture of aluminum oxide and silicon granules in an epoxy resin and hardener mixture and locked into channels in an extruded aluminum base, alloy 6063-T6. Coefficient of friction 1.02 dry, 0.98 wet per ASTM F 609. Abrasive filler color as selected.
Color as selected.
For renovating any concrete, wood, metal or terrazzo stairs.
Tread 9/32″ thick, Flat back, Lip 1 1/8″ from underside