Windows • Curtain Walls • Entrances • Storefronts Series 3502 Thermal • Series 3902 Fixed Thermal 3 1⁄4" Architectural Grade Horizontal Sliding Window Series 3502 retains an AAMA Architectural Grade rating to meet the most demanding specifications. The 3502 window system is an attractive product for a wide range of applications. Multiple glazing options provide flexibility to meet specific design requirements. E-Strut™ thermal isolators in the frame and sash provide outstanding thermal performance while allowing for dual finish capability. Offered with a complete line of sub frames, mullions and architectural sills the 3502 and 3902 window provides the complete solution for your fenestration needs. E-StrutTM thermal isolator Improves thermal performance Enhances energy saving potential Allows dual finish capability Continuous interlock at the sash meeting rail Offers superior weathering and structural performance Sash glides on tandem steel ball bearing rollers over a raised sill track The raised sill track minimizes the effect of dirt and debris build-up on the sill Glazing depths of 1⁄8" to 1" are accommodated Expands design and energy saving options Dual glazing Improved energy savings Variety of locking and operating hardware Allows flexibility in design Trim-All™ panning, frame extenders, interior trim and stools available Allows old perimeter frame to remain in place Screen frames of extruded aluminum alloy are available Stronger, more durable screens Accessory line of subframes, mullions, and architectural sills Allows custom designs with standard product Anodized and painted finishes available Multiple options to answer economic and aesthetic concerns © Copyright 2013 EFCO Corporation 4/13 Debris removal is minimized 1000 COUNTY RD • MONETT, MO 65708 • 800.221.4169 • efcocorp.com

Series 3502 Thermal • Series 3902 Fixed Thermal 3 1⁄4" Architectural Grade Horizontal Sliding Window Vent Frame Construction Main Frame Construction Note: All performance data is subject to change based on testing recertification and/or revised AAMA testing protocol. Please contact EFCO for latest performance values. Concealed Plunger Lock Sweep Lock Horizontal Sliding Pole Ring Sweep Lock S-3502 Glazing Chart Monolithic & Insulated Glass Exterior Lite Dual Glazing Interior Lite Auto Jamb Lock © Copyright 2013 EFCO Corporation 4/13 Access Controlled Sweep Handle O Pole Socket * Based on NFRC...

Windows • Curtain Walls • Entrances • Storefronts Series 3502 Thermal • Series 3902 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....