Chrome plated zamac bumper is used with inswinging or outswinging doors. Mounts on any thickness pilaster, square or round edge. Holes are 1-1/2" on center.(Related parts: 21-019, 21-023, 21-009, 21-010, 21-011). Fits on Flush Metal, Ampco, Shanahan, Capitol, and Comtec partitions.Please see the "Related Products" tab shown above. Please click on the pictures above for detailed measurements.