WELCOME TO NATIONAL VINYL
Middleborough, We're Your Neighbors!
Our vinyl window production plant is less than eighty nine miles from the center of Middleborough. Thank you for making National Vinyl Middleborough's choice for over 35 years!
Directions from Middleborough
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.
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.