Windows • Curtain Walls • Entrances • Storefronts Series 2901 4 1⁄2" Impact/Blast Grade Fixed/Projected/Casement Windows Casement Out • Fixed • Project Out The 2901 window system is an attractive product for a wide range of configurations and applications. This product is approved for use in High Velocity Hurricane Zone. Florida Product Approvals 12912.3, 12912.4, 13784.1, 14628.2, 14831.3 and 14831.4 Vertical stacking members Increases configuration options Angle reinforced vent corners Improves sash/vent rigidity Pressure equalization Superior water resistance Anodized and painted finishes available Multiple options to answer economic and aesthetic concerns © Copyright 2013 EFCO Corporation 4/13 1000 COUNTY RD • MONETT, MO 65708 • 800.221.4169 • efcocorp.com

Series 2901 4 1⁄2" Impact/Blast Grade Fixed/Projected/Casement Windows Vent Frame Construction Main Frame Construction © Copyright 2013 EFCO Corporation 4/13 1000 COUNTY RD • MONETT, MO 65708 • 800.221.4169 • efcocorp.com

Windows • Curtain Walls • Entrances • Storefronts Series 2901 4 1⁄2" Impact/Blast Grade Fixed/Projected/Casement Windows Frame Construction The frame is constructed from .125" nominal material wall thickness aluminum of 6063-T6 alloy with a depth of 4 1/2". It features a standard equal leg frame. Corners are of screw spline construction and back sealed with small-joint seam sealer. See Illustration 1. Vent Frame Construction The vent consists of a tubular member with .125" nominal material wall thickness aluminum of 6063-T6 alloy with a depth of 2". Vent corners are mitered, angle reinforced,...