Series 8520/ 8620/ AC85 Heavy Commercial / Architectural Aluminum Thermal-Break Project-Out Windows

  • Frame Depth = 2+5/8″ (8500), 3+1/4″ (8600)
  • AAMA Rated: AW-PG80
  • 1” Insulated Glass Unit
  • PPG “Intercept” Insulated Glass Spacer ~ the “warm edge” technology of choice.
  • Heavy-Duty Construction ~ frame and sill are .125″ thick for utmost strength and durability.
  • Double Weatherstripping ~ Two rows of 1/4″ bulb used on sash perimeter.
  • Four-Bar HS/SS Friction Hinges ~ hold sash in open position.
  • Integral Handle Rail
  • AAMA 2604 Powder Coat Finish

Product Description

This Crystal® Series 8520 aluminum architectural projected window series features a heavy-duty, high performance frame structure, an innovative polyurethane thermal barrier technology that thermally breaks conductivity of the aluminum frame to substantially reduce thermal transfer from exterior of window to interiors, and “Intercept ULTRA” warm edge glass spacer technology. These integrated features reduce heating and cooling loads on HVAC systems, providing long term energy efficiency and utility savings to property owners. This series is ideal for multi-story commercial projects where high strength structural integrity of the window frames is essential. The heavy-duty frame construction allows for larger expanses of glass that provide unobstructed views. Ergonomically-designed hardwares make this series a popular choice for developers of prestige commercial projects, and upscale residential communities.


  • Argon & Low-E ~ to enhance the thermal performance of the window.
  • Muntins ~ between-the-glass applied
  • Custom Colors & Finishes
  • 3¼” Frame Depth
  • 1¼” Insulated Glass Unit Thickness – Enhanced insulation & sound reduction.
  • 1½” Casement Fin
  • Continuous Master Frame Design – Up to 3-lites
  • Receptor System & Subsill
  • Panning & Interior Trim
  • Fixed – 8510, Project Out – 8520, Project In – 8530
  • Eurogroove Hinge
  • Glazing options available to meet many state and local municipality energy codes, call a Crystal representative to confirm glazing type required