REPLACEMENT DOOR KEEPER – This sliding door keeper is used by W and F and a variety of other sliding patio door manufacturers ADJUSTABLE – Featuring vertical screw slots, the sliding door latch keeper allows for adjustment BUILT TO LAST – Constructed from diecast and finished in aluminum, this patio sliding door keeper is strong, durable, and built to last EASY INSTALLATION – Quickly and easily install the patio door hardware using the included mounting hardware DIMENSIONS – This patio door lock keeper measures 4-1/4 inch x 15/32 inch and has 3-1/ inch on center mounting holes; please refer to the line art drawing for dimensions and compare with your needs before ordering (not universal)