A pair of Heavy Duty Storm Sash / Window Screen Hangers measure 1 1/4 inch at its widest point and has a total length of approximately 3 1/4 inches. The hangers are made of steel with a black painted finish. The hangers are suitable for wood sashes that hang flush with the casing. The wood frame of the storm sash or window screen sash should have at least 1 1/4 inch of mounting space and should be at least 7/8 of an inch thick so the wood screws don't protrude through the back of the frame. If your frame is less than 7/8 of an inch thick then you may need to purchase shorter screws from your local hardware store. California residents subject to 8.625% sales tax. Please feel free to ask any questions you may have on the piece.