discover why the okna insultec is the number one choice for DOUBLE-HUNG windows
The Okna series 500 also called the Insul-Tech is one of Okna windows premium window products. Some of the feature that make the Okna series 500 so good are it's fusion welded main frame and unique exterior beveled profiles making the Insul-tech one of the most attractive windows on the market today. You will love the look and the warmth that this product will bring to your home, as well as the energy savings and easy maintenance. This is why Suburban Windows carries the Okna series 500 as one of it's quality windows products.
Includes our high performance Low E and Argon insulated glass and Foam Filled Insulated Frames and Sashes.
Includes our high performance Low E and Argon insulated glass and Foam Filled Insulated Frames and Sashes.
- Welded construction and beveled exterior frame..
- 100% premium virgin vinyl.
- Clima-Guard Glass with Argon Gas for a low .26 U Value and our warn edge Heat Seal Spacer system.
- Triple weather stripping are added to all the sash for superior air infiltration ratings.
- Low air infiltration ratings of 0.02, Out performing windows like the Harvey, Alside, Anderson, Pella, Champion or Castle Windows in thermal efficiency air infiltration and structural load.
