Item is brand new, comes in box which I opened just to confirm measurements. The frame is 39 x 23 inches. The glass within the frame is 35 x 19
White Cordless Add-On Blinds for Raised Frame Doorglass 21-3/4 In. Width X 65-3/
Width X 65-3/4In. The 20 in. size shown in photo is designed to fit widths of 21-3/4 in. and heights of 65-3/4 in. There are no exposed cords or other hazards to children and pets. Just move the side mounted levers to raise and lower or tilt the blinds.