SKU: SL-CD-1064-US3A - Sterling Hardware Folding Door Lock. For doors 3/4" to 1-3/8" thick. Adjustable for 1-3/4" thick doors. Only one 3/4" hole needed. Strike is mounted on back side of opposite panel or jamb. Latch hooks strike providing positive locking action. Brass plated. US3 Bright Brass fin..