Don Young Window Products
PolyPour Aluminum Thermal Break Windows
Not all "aluminum windows" are the same! Our commercial-grade aluminum windows feature a thermal break that separates the inside metal from the outside metal with very high-density catalyzed polyurethane. Generically, this engineered design is called "pour and de-bridge" in reference to the extrusion process. We just call it PolyPour.

Series 8200 sill set upon dry ice proving the thermal effect of our PolyPour aluminum thermal-break design. Conventional aluminum windows would frost completely in the same test.

Our sashes feature among the thickest walls available in residential windows, double wool pile weather strips, and a significant PolyPour thermal break chamber.

Our PolyPour aluminum window is incredibly strong. Typical aluminum windows can't be compared to the mass and density of our Series 8200 jamb under the two contractors.
These windows set our aluminum lines apart from conventional, old-fashioned typical aluminum windows that have no thermal breaks. PolyPour windows from Don Young Company fight condensation and have significantly better insulating values than any cheap "builder grade" aluminum window.
Aluminum Window Systems
- DYC Single Hung System — PolyPour Single Hung Tilt window and its companion horizontal sliding window, picture windows, and specialty shapes. Series 8200, 8800, 8100, and 8300.
- DYC Double Hung System — PolyPour Double Hung Tilt window and its companion slider and picture window. Series 8400, 8700, and 8500.
- DYC Storm Window System — BiTrak™ and TriTrak™ designs featuring single hung, double hung, sliders, picture windows, and shapes.
- DYC Aluminum Casement System — Series 8900 Casement, Awning, and Fixed windows.
- "Classic" Vinyl Window System — Single Hung Series 6220, Slider Series 6120, Picture Window Series 6810.
SunShield® Vinyl Windows
Not all "vinyl windows" are the same! Our exclusive SunShield® Vinyl compounds are specially formulated with highly refined polymers in combination with engineered multi-chamber designs to feature high-performance, attractive, energy-efficient windows you can rely upon.
- Single Hung System — Series 5200 Group
- Double Hung System — Series 5400 Group
- Casement System — Series 5800 Group

