Profile: Wholesale Gate Co. is a manufacturer of steel folding security gates. Our steel folding security gates provide security, ventilation & visibility for dock doors, lift-up doors, hallways and entranceways. Our folding gates are made of 3/4" wide 14 gauge steel channel, riveted back to back with solid steel rivets. We supply gates in standard sizes from 4-1/2' wide by 5-1/2' high single gates to 16' wide by 8-1/2' high double gates. We also make custom size single and double gates up to 10' high.