This system offers an economical solution to thermally improved ribbon glazing applications. System 904 is provided in stock lengths for fabrication in the field.  Mullions are captured in head and sill can receptors without need for mechanical fasteners. Intermediate horizontals join mullions utilizing shear block construction. System 904 is available in butt-glazed or captured mullion versions and accommodates 3/4", 7/8", 5/16", 1", and 1 1/6" glazing.

Frame members are thermally improved by fill and debridge
Increases thermal performance
Interlocking can system
Facilitates rapid installation
Optional face cap
Individual interior and exterior finish capability
Provides ribbon wall appearance
90° and 135° corner mullions are available
Accommodates multifaceted elevations
Utilizes a common mullion with standard verticals attached to reduce number of dies
Accommodates 3/4", 7/8", 5/16", 1", and 1 1/6" glazing
Handles the most popular glass thicknesses
Accessory line of pocket fillers, vent adaptors, etc.
Increased product versatility
Anodized and painted finishes available
Unlimited options to answer economic and aesthetic concerns
  • Thermal Framing Details

    Thermal Framing Details