FPL''s Window Stay design is modern and sleek. Laying flush against the window sill when installed and in a closed position, this product lays out of the way when not in use. The window stay also provides added security, with a knob that tightens on the rod in any position, preventing it from opening up any farther. Use this casement adjuster to open your window to just the right position.-Allows casement windows to be securely open at any position-Acts as a dual safety feature-10" Length, 2-1/16" Height-Heavy duty brass material with durable Polished Brass finish; designed to last-Knob to slide a window open and closed with ease-Mounting screws included