WELCOME TO NATIONAL VINYL
Westport, We're Your Neighbors!
National Vinyl's window manufacturing plant is under ninety miles from Westport. We've been loyally serving Westport for over 3 decades.
Directions from Westport
Window features & options
National Vinyl manufactures superior insulated clear glass, Low-E, or Low-E with argon gas windows engineered to meet today's demanding energy standards for thermal performance. National Vinyl is proud to introduce Krypto-Lite a revolutionary triple glazed dual Low-e with double Krypton Gas fill. This process provides one of the best insulating windows on the market with an overall U-Value of .20…that's an R-Value of 5! This will allow us to be one of less than 60 manufacturers Nationwide to be listed on the DOE R-5 program.
National Vinyl manufactures superior insulated clear glass, Low-E, or Low-E with argon gas windows engineered to meet today's demanding energy standards for thermal performance. National Vinyl is proud to introduce Krypto-Lite a revolutionary triple glazed dual Low-e with double Krypton Gas fill. This process provides one of the best insulating windows on the market with an overall U-Value of .20…that's an R-Value of 5! This will allow us to be one of less than 60 manufacturers Nationwide to be listed on the DOE R-5 program.
Multi-chambered hollows in frame and sash create greater insulating and structural value.
Where the sash meets the sill we use a superior bulb seal which acts similar to the gasket on your refrigerator, providing a tight seal against water and air infiltration. This foam seal has a memory that will keep its shape even after months of being compressed.

Triple-Glaze: KryptoLite/Low-E
1 of 5Fusion Welded
2 of 5Memory Seal
3 of 5This is a tooltip
4 of 5Chambered Hollows
5 of 5Find a window installer in Westport from our recommendation network
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