3 Hole - Center Tap Base Plate Metric For Profile Type Quad Fastener Thread Size M8 x 1.25 Anodized Fastener Thread Length 31 3/4 mm Overall Height 97 mm Aluminum 40 Series Includes Fasteners No Overall Depth 19 mm Overall Width 80 mm Mounting Hole Diameter 8 mm Required Tap Thread Size M8x1.25 Fastener Mounting Type Drop In Adjustable Yes White Compatible Brand and Series 80/20 40 Series