Seco-Larm SD-995A-A1Q Electric Door Strike with Horizontal Adjustment for Wood & Metal Doors; 1/4" Horizontal keeper adjustment compensates for installation difficulties such as warped doors, etc Unique design accommodates both wood and metal doors, Fail-secure operation Reversible for right or left-handed doors, Durable stainless-steel faceplate Miniature lock body for easier installation, Corrosion-resistant case and moving parts Complete mounting hardware included, Screw terminals for ease of wiring 1,000-lb (453kg) Jaw strength, Tested to 500,000 cycles