PROTECT YOUR HOME FROM INTRUDERS Keep intruders from opening windows and sliding doors with these easy-to-use security bars. They’re virtually immovable when locked into place. Simply twist to unlock. 22-gauge white powder-coated steel. Soft rubber end caps. 1.25” diameter. Sliding door bar adjusts from 27” to 50” L. Window bar adjusts from 17” to 30”L.