Our adjustable square table stand is just what you need to show off your artwork. Readily changes size to fit all your glass. Holder arms slide easily up and down and side to side to adjust for artwork. Closed size holds glass 7.5 in. wide to 12 in.wide and 4 in.high to 7 in. high; open holds glass 12 x16 in. . Also available SWS1220, square wall stand and STS1220 another adjustable table stand. ALSO AVAILABLE WITH THREADED HOLE FOR LIGHTING ATTACHMENT (OPTIONAL).