R35 1438 - Horizontal Swing Ladder The Horizontal Swing Ladder R3.5 shall be fabricated using 2.375" O.D. 10 gauge steel tubing with welded 1.315" O.D. 12 gauge steel fixed cross braces and extensions, 1.029" O.D. 14 gauge steel handles, and 3/8" thick steel tabs and will be Powder Coated as specified. The Horizontal Swing Ladder Rung R3.5 shall be fabricated using 1.315" O.D. 12 gauge steel tubing with welded 1.029" O.D. 14 gauge steel handle and machined steel housings and will be Powder Coated as specified. The Socket Clamps shall be two-part and precision die-cast from a high strength aluminum alloy and will be Powder Coated as specified. 1400 - End Access Ladder The End Access Ladder shall be fabricated using 1.315" OD, 12 gauge steel tubing and will be Powder Coated as specified. The Socket Clamps shall be two-part and precision die-cast from a high strength aluminum alloy and will be Powder Coated as specified.