Exodus 26:15-25

“For the framework of the Tabernacle, construct frames of acacia wood. Each frame must be 15 feet high and 27 inches wide, with two pegs under each frame. Make all the frames identical. Make twenty of these frames to support the curtains on the south side of the Tabernacle. Also make forty silver bases—two bases under each frame, with the pegs fitting securely into the bases. For the north side of the Tabernacle, make another twenty frames, with their forty silver bases, two bases under each frame. Make six frames for the rear—the west side of the Tabernacle— along with two additional frames to reinforce the rear corners of the Tabernacle. These corner frames will be matched at the bottom and firmly attached at the top with a single ring, forming a single corner unit. Make both of these corner units the same way. So there will be eight frames at the rear of the Tabernacle, set in sixteen silver bases—two bases under each frame.