- LMT stair rail 2 inch long x 3.5 inch wide white bracket kit use with our standard or t-rail stair rail kits. the 2 inch x 3-1/2 inch stair rail kit includes: (2) 2 inch x 3-1/2 inch stair rail brackets, (8) #10 x 3/4 inch phillips pan head stainless steel screws, (8) pvc screw hole plugs, (2) self-drilling pan head screws (self-drilling in order to drill into the aluminum stiffener), (2) pvc screw covers, (1) instruction sheet.