About this item Constructed with sturdy 3/4-inch square steel tube crossbars and 7/8-inch square steel tube corners and legs Easy-Slide slip-fit connection permits quick and easy assembly without tools Sturdy 18-gauge steel, black rust-resistant enamel-finish square tube frame is designed to eliminate slipping and twisting that occur with round tube frames Any screen can be used horizontally or vertically 24-inch sturdy platform legs can be turned 90 degrees to prevent interference with adjoining screens