526 Thermal Windows

The 526 Thermal Windows improve condensation resistance and thermal-transmittance performance capability.

  • 2-1/4″ (57.2mm) depth
  • Thermal performance
  • Casement or projecting configuration
  • 14.6 mm IsoPort™ glass-reinforced nylon 6/6 thermal break provides:
    • Improved condensation resistance and thermal-transmittance performance capability
    • Rigid profile with composite structural performance
    • Exterior / interior finish options
  • Meets or exceeds the highest performance levels of CSA standard CAN/CSA-A440 windows
  • Sash features mitered and clip, adhesive and stake joinery to provide rigid and weather tight corners
  • Operating sash uses tubular extrusions
  • Factory fabricated and assembled
  • Optional full rain screen capability
  • Accommodates 1-inch (25 mm) sealed glazing units
  • Glass installed and replaced from interior
  • Exterior pre-shim butyl glazing tapes
  • Interior EPDM rubber glazing gaskets
  • Lock-in glass stop
  • Optional insect screens

Thermal Technology

Find out more here.

526 Thermal Windows - Architectural Detail Manual
3 MB
Fenêtres thermiques 526 - Manuel de détails architecturaux
3 MB
Product Selection Guide Windows
588 KB
Projected & Casement Windows/Aluminum Windows -EPD
893 KB
Finishes Brochure
5 MB
Finishes Information - Architectural Detail Manual
238 KB
Anodize Finishes - Color Chart
82 KB
Liquid Paint - Color Chart - Permadize®
1 MB
Liquid Paint - Color Chart - Permafluor®
350 KB
526 Thermal Casement Window - English
526 Thermal Casement Window - French
526 Thermal Projected Window - English
526 Thermal Projected Window - French

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526 Window Inswing
526 Window Inswing Rain Screen
526 Window Outswing
526 Window Outswing Rain Screen
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While most of our products are not hazardous in and amongst themselves, hazardous properties can develop when the product is altered through cutting, welding, and grinding.  Details on the specific hazards that can develop and the proper protective measures to use can be found in the SDSs.

Arconic’s SDS database provides PDF files of safety information on specific materials.  The SDS ID numbers (product code) and description for materials used in Kawneer products are listed below.

1405 – Kawneer Thermal Break Filled Extrusions
1385 – Kawneer Acrylic Paints
1386 – Kawneer Fluoropolymer Paints

1526 – Kawneer Bloomsburg Solvent Recovery Still Residuals

1387 – Painted Architectural Aluminum Extrusions
509 – Aluminum Extrusions, Anodized Aluminum Products


Search Arconic’s SDS database for safety information on specific materials.

Search Instructions

Warranty Disclaimer TBC

Project Warranty Cover Sheet (English)
137 KB
Project Warranty Cover Sheet (French-Canadian)
137 KB
Project Warranty Cover Sheet Sample (English)
139 KB
Project Warranty Cover Sheet Sample (French-Canadian)
140 KB
Material & Workmanship - English
185 KB
Material & Workmanship - French
190 KB
Material & Workmanship Sample (English)
203 KB
Material & Workmanship Sample (French Canadian)
212 KB
Anodized Finishes Warranty - English
523 KB
Anodized Finishes Warranty - French
517 KB
Anodized Finishes Sample (English)
529 KB
Anodized Finishes Sample (French Canadian)
524 KB
Painted Finishes Warranty - English
557 KB
Painted Finishes Warranty - French
538 KB
Painted Finishes Sample (English)
565 KB
Painted Finishes Sample (French Canadian)
550 KB
Insulating Glass Warranty - English
498 KB
Insulating Glass Warranty - French
499 KB
Insulating Glass Sample (English)
502 KB
Insulating Glass Sample (French Canadian)
504 KB
Laminated Glass Warranty - English
122 KB
Laminated Glass Warranty - French
123 KB
Laminated Glass Sample (English)
126 KB
Laminated Glass Sample (French Canadian)
128 KB
Corrective Field Repairs (English)
154 KB
Corrective Field Repairs (French-Canadian)
152 KB