4500XL SERIES

BYPASS WINDOW WALL

The 4500XL Series is a 5 ⅝” deep, fully engineered, bypass window wall system. Fully receptored and installed from the interior, the 4500XL Series has an integrated slab cover which creates a full slab-to-slab façade appearance. Its modular design accepts a wide range of infills, from operable windows to UHPC and shadowboxes. The 4500XL maximizes daylight while delivering superior performance.

STANDARD FEATURES

  • 1 1/4” Insulated glass
  • Factory glazed for site ease
  • Modular design allows for various operable infills
  • Strutted design for superior thermal performance
  • Full receptor system for easy site installation
  • Slim sightlines
  • Male / female jambs for easy field stacking
  • Versatile for both punched and wall requirements
  • Cantilevered off the edge of the slab for bypass
    capabilities
  • Integrated slab cover
  • Dedicated and captured 90° corners

OPTIONAL FEATURES

  • Shadowbox, UHPC, Panel or Spandrel infills
  • Operable Vent and Door plug-in options
  • Reinforcement for larger spans
  • Glazing up to 1 3/8” to meet higher OITC values
  • Glazing options to meet 2020 EEC C401 U-Value and
  • SHGC requirements for fixed curtain wall

AVAILABLE ACCESSORIES

  • Slab edge insulation
  • Intermittent stabilization anchors
  • Window washer bolts
  • Parapet covers
  • Deco caps or fins
  • Trickle vents

TypeAAMA RatingSTRUCTURAL LOAD (psf)TEST SIZEWIND SPEED (mph)AIR (cfm/ft²)WATER (psf)U-VALUE¹
FixedAW-10015060" x 99"50 (6.24 psf)<0.1150.38

* Down-sized testing
Performance data based on testing by AAMA Accredited Laboratory and NFRC Simulation software/or independent testing. Actual results will vary based on field conditions, locations, size/configurations or glazing options. Be sure to verify the performance requirements for your particular project. 1 U-Values will vary depending on the glazing selected. Please contact Northern for more information.

STANDARD FEATURES

  • 1 1/4” Insulated glass
  • Factory glazed for site ease
  • Modular design allows for various operable infills
  • Strutted design for superior thermal performance
  • Full receptor system for easy site installation
  • Slim sightlines
  • Male / female jambs for easy field stacking
  • Versatile for both punched and wall requirements
  • Cantilevered off the edge of the slab for bypass
    capabilities
  • Integrated slab cover
  • Dedicated and captured 90° corners

OPTIONAL FEATURES

  • Shadowbox, UHPC, Panel or Spandrel infills
  • Operable Vent and Door plug-in options
  • Reinforcement for larger spans
  • Glazing up to 1 3/8” to meet higher OITC values
  • Glazing options to meet 2020 EEC C401 U-Value and
  • SHGC requirements for fixed curtain wall

AVAILABLE ACCESSORIES

  • Slab edge insulation
  • Intermittent stabilization anchors
  • Window washer bolts
  • Parapet covers
  • Deco caps or fins
  • Trickle vents

TypeAAMA RatingSTRUCTURAL LOAD (psf)TEST SIZEWIND SPEED (mph)AIR (cfm/ft²)WATER (psf)U-VALUE¹
FixedAW-10015060" x 99"50 (6.24 psf)<0.1150.38

* Down-sized testing
Performance data based on testing by AAMA Accredited Laboratory and NFRC Simulation software/or independent testing. Actual results will vary based on field conditions, locations, size/configurations or glazing options. Be sure to verify the performance requirements for your particular project. 1 U-Values will vary depending on the glazing selected. Please contact Northern for more information.