Windows • Curtain Walls • Entrances • Storefronts Series 6551 Thermal 3 7/8" Impact/Blast Grade Horizontal Sliding Window Series 6551 is designed for use in a wide range of applications such as educational, office, and healthcare facilities as well as multi-family residences and condominiums. It has a Florida product approval (Report #12908.1) and has undergone High Velocity Hurricane Zone (HVHZ) testing. It is a fully strutted product, which allows for interior and exterior 2 color option while providing superior thermal qualities and product longevity. Thermally isolated system uses EFCO E-Strut™ Dual finish capability Improved thermal performance Completely eliminates dry shrinkage Continuous interlock at the sash meeting rail Offers superior weathering and structural performance Provides flexibility with level of protection required Sash glides on tandem steel ball bearing roller over a raised sill track The raised sill track minimizes the effect of dirt and debris build-up on the sill Anodized or 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 6551 Thermal 3 7/8" Impact/Blast Grade Horizontal Sliding Window PERFORMANCE DATA 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. * Based on NFRC 100 **NFRC Gateway size Concealed Plunger Lock Sweep Lock Horizontal Sliding Pole Ring Sweep Lock Horizontal Sliding S-6551 Glazing Chart Monolithic & Insulated Glass Exterior Lite Dual Glazing Interior Lite Auto Jamb Lock Pole Socket Some size restrictions may apply depending on hardware selected. O - Optional S - Standard...