Windows • Curtain Walls • Entrances • Storefronts Series 3503 Thermal • Series 3903 Fixed Thermal 3 1⁄4" Architectural Grade Horizontal Sliding Window Series 3503 retains an AAMA Architectural Grade rating to meet the most demanding specifications. The 3503 window system is an attractive product for a wide range of applications. The sash glides on tandem steel ball bearing rollers. Multiple glazing options provide flexibility to meet specific design requirements. The window is thermally improved for enhanced energy saving potential. Offered with a complete line of sub frames, mullions and architectural sills, the 3503 and 3903 window provides the complete solution for your fenestration needs. E-StrutTM thermal isolator Improves thermal performance Enhances energy saving potential Allows dual finish capability Raised sill track Minimizes the effects of debris and dirt buildup on the sill Sash glides on tandem steel ball bearing rollers Allows easier operation Variety of locking and operating hardware Allows flexibility in design Accommodates glazing units from 1⁄8" to 1" depth Expands design and energy saving options Screen frames of extruded aluminum alloy are available Stronger, more durable screens Anodized and painted finishes available Multiple options to answer economic and aesthetic concerns © Copyright 2012 EFCO Corporation 11/12 1000 COUNTY RD • MONETT, MO 65708 • 800.221.4169 • efcocorp.com

Series 3503 Thermal • Series 3903 Fixed Thermal 3 1⁄4" Architectural Grade Horizontal Sliding Window Concealed Plunger Lock Sweep Lock Horizontal Sliding Pole Ring Sweep Lock S-3503 Glazing Chart Monolithic & Insulated Glass Exterior Lite Dual Glazing Interior Lite Pole Socket Auto Jamb Lock © Copyright 2012 EFCO Corporation 11/12 Zinc Plated Steel Ball Bearing Rollers S Access Controlled Sweep Handle O Stainless Plated Steel Ball Bearing Rollers O Some size restrictions may apply depending on hardware selected. O - Optional S - Standard Blank - N/A * Obscure glass thickness ** Laminated glass...

Windows • Curtain Walls • Entrances • Storefronts Series 3503 Thermal • Series 3903 Fixed Thermal 3 1⁄4" Architectural Grade Horizontal Sliding Window Frame Construction The frames have a depth of 3 1/4" and are constructed of 6063-T6 aluminum alloy. Nominal material wall thickness for the frame is .062", and the sill has a minimum wall thickness of .094". Corners are of screw spline construction and sealed. See Illustration 1. Sash Frame Construction The sash consists of aluminum members with .062" nominal material wall thickness of 6063-T6 alloy. Sash verticals telescope into sash horizontals....