Southco Non-Locking Plastic Flush Latch UV stabalized plastic or 316 Stainless steel latch both designed to withstand harsh marine conditions Supplied with multiple backing plates to fit any door thickness .075" to .875" thick Supplied with keys (locking only) and mounting instructions for easy two bolt installation Fits standard 2" hole cutout Original equipment Southco M1 slam latch utilized by boat builders around the world