Amstep Model 241A, 4 inches wide, lip 1/4 inch from underside. Tread 1/4 inch thick with continuous arrow-profile anchor 3/4 inches deep. 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 poured or precast concrete, and steel pan cement-filled stairs
Tread 1/4″ thick, Lip 1/4″ from underside
Continuous arrow anchor shall be an additional 3/4″ deep.