2⅜" 4500 Series Project-In Hopper Windows


NAMI Gold Label Product

  • 2 3/8" Frame depth
  • Structural thermal break
  • High quality 1” sealed insulated glass
  • Pour and debridge polyurethane thermal break utilizing Azo-Brader™ technology, with a 10-year pass-through warranty against failure of the polymer
  • .080 Typical Wall Thickness – Aluminum Alloy 6063-T6
  • Integral mulling/stacking system
  • Mulling and sub-frame options

Finishes available:

  • White, Bronze (AAMA 2603)
  • 70% Fluoropolymer: White, Bronze (AAMA 2605)
  • Anodized: Clear, Bronze (AAMA 611)
    Non-standard colors are available with a minimum order

CAD Drawings
Enlarged Corner Section
4500/4600 Series Project Gallery

Rating Structural/
Test Size
Air Infiltration
(cfm/sq ft)
Water Resistance
AW40: Standard 60W x 36H .08
@6.27 psf
8.15 40 60
AW70: Optional^ 60W x 36H .08
@6.27 psf
12.11 70 105
AW90: Optional^ 60W x 36H .08
@6.27 psf
12.11 90 135
^ Many window ratings can be increased by downsizing the window and determining maximum performance through testing. Contact your local Wojan Sales Representative or our office for details.
* This is an intentional overload aspect to window performance testing and should not be used in lieu of the window DP (Design Pressure) when evaluating a product for a specific project or use.

Contact us for current specification documents: 800.632.9827


Related products: Common project types:
4500 Series Project-In Casement Education: K-12
4500 Series Fixed Windows Hotels
4600 Series Project-Out Awning Mid-Rise/High-Rise