Keep Kids Safely Inside Windows with GA1723-43 Guardian Angel Window Guard Guardian Angel window guards are egress escape window guards designed for safety not for home security . The GA1723-74 is a 3 Bar window guard that expands to fit windows 17 to 23 inches high or wide and 13 to 17.25 inches wide or high . Mount horizontally or vertically. Stack if needed as side mounts butted together are 4 inches. Guardian Angel window guards are made from strong, steel tubing powder coated with a durable, lead-free white paint and tested to withstand 150 pounds of pressure in locked position. Bar spacing of 3 7/8 exceeds 4 to 5 safety standards. Remove window guards from inside or outside. Depress two emergency release buttons, slide into wider bar, depress two others on other side and remove. Side posts anchor with 2 sheet metal screws into solid stud or frame mats. Combine of 3, 4 or 5 bar units to protect openings of vertical windows like sliders and casements or mount horizontally to fill part or all of single or double hung windows that go up and down. For inside use only. Conforms to American Society for Testing and Material standards ASTM F2090-01A and recognized by the U.S. Consumer Products and Safety Commission. Meets Massachusetts building codes 780CMR 3603.14.2.2 and 780 CMR 1010.4. Made in USA. Lifetime guarantee by manufacturer. How to measure for child safety window guards Identify window type. VERTICAL The window opens by sliding a panel to the side in a track, cranking a panel out or pulling or pushing a panel of glass in or out. Guards for vertical windows are mounted like prison bars to protect either the entire window opening or the entire window. SINGLE HUNG The lower window panel moves up and down in a track. DOUBLE HUNG Both the upper and the lower window panels move up and down, each in its own track. For Single or Double hung windows, customers usually protect only the window opening. This is done with a single gu This item ships from a separate warehouse and may require extra time for delivery.