The 5-bar swing-open adjustable window security bar keeps intruders out and helps prevent window falls. It works with most single-hung, double-hung, sliding and casement windows. The 5 bars have 3.5 in. openings and can be locked with a padlock or nut and bolt (not included). Includes a fire safety release pin for quick exit in case of fire. Mounts inside the house horizontally or vertically, on the surface or recessed, swing or fixed mounted. Adjustable in width from 24 in. to 42 in. Mounting hardware included for easy installation. Solid steel construction with a durable, white powder coat finish.