Windows • Curtain Walls • Entrances • Storefronts Series 601 Single Hung • Series 6615 Fixed • 6740 Fixed 3 7⁄8" Architectural Grade Hung Thermal Window Single Hung • Fixed This product family of hung windows retains a heavy commercial and architectural rating to meet the most demanding specifications and is designed for projects ranging from historical replication to new construction. This hung window series is an attractive and economical product for a wide range of applications. Multiple glazing options offer flexibility to meet specific design requirements. With removable putty glaze frame and snap-in-grid outside of the glazing pocket. A thermal barrier in the frame and sash improves thermal performance enhancing energy saving potential. Offered with a complete line of sub frames, mullions and architectural sills, this product family provides the complete solution for fenestration needs. Thermal barrier in vent and frame Improves U-Factor performance Enhances energy saving potential Weather-stripped sash and sill Provides superior air and water performance Continuous interlock meeting rails Improves air infiltration resistance Accommodates glazing from 1⁄8" to 1" depth Expands design and energy saving options Inside or outside glazed sash Flexibility in design requirements for glazing Exterior snap-in-grid Easily removable grid for glass cleaning Automatic sash locks available Increased convenience Screen frames of extruded aluminum alloy are available Stronger, more durable screens Trim-All™ panning available Allows matching of existing sight lines in restoration projects Accessory line of subframes, mullions, and architectural sills Allows custom designs with standard product Anodized or painted finishes available Multiple options to answer economic and aesthetic concerns © Copyright 2015 EFCO Corporation 05/15

Series 601 Single Hung • Series 6615 Fixed • 6740 Fixed 3 7⁄8" Architectural Grade Hung Thermal Window S-601 Single Hung Hardware Chart SWEEP LOCK Auto Sill Lock Pole Ring Sweep Lock Pole Socket SINGLE HUNG Fixed upper Inside Glazed S-601 Single Hung Glazing Chart Monolithic & Insulated Glass * Based on NFRC 100 **NFRC Gateway size Some size restrictions may apply depending on hardware selected. O -Optional S -Standard Blank - N/A *-Obscure glass thickness **-Laminated glass thickness A-available glazing option I-internal blinds can be used with this type of dual glazing Blank - N/A Glass or...

Windows • Curtain Walls • Entrances • Storefronts Series 601 Single Hung • Series 6615 Fixed • 6740 Fixed 3 7⁄8" Architectural Grade Hung Thermal Window Main Frame Construction The frames have a depth of 3 7/8" and are constructed of 6063-T6 aluminum alloy. The nominal material wall thickness for the frame is .080", 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 .080" nominal material wall thickness of 6063-T6 alloy. Corners are of screw spline construction...