The patented Low-E EnviroShield System has just been improved to create some of the industry's most energy efficient windows and doors for the hot and humid Gulf Coast region. At Showcase Custom Vinyl Windows and Doors we focus on constantly improving our product quality by enhancing our NFRC ratings.
Below are some of the statistics that show the difference between our EnviroShield® Plus and EnviroShield® Max systems. The most important number from this chart is the Solar Heat Gain Coefficient. The lower this number is, the more savings you will incur on your monthly energy bills. Switching to the EnviroShield® system can save you hundreds of dollars on your energy bills.
Our EnviroShield Plus comes standard on all of our products.
EnviroShield Plus and EnviroShield Max NFRC Ratings:
|
Window Type
|
GLASS TYPE
|
U-Factor
|
Condensation Resistance
|
Solar Heat Gain Coefficient
|
Visible Transmittance
|
|
Single Hung Window
|
EnviroShield Plus
|
0.34
|
53
|
0.34
|
0.58
|
|
EnviroShield Max
|
0.34
|
53
|
0.22
|
0.52
|
|
Horizontal Sliding Window
|
EnviroShield Plus
|
0.34
|
54
|
0.32
|
0.55
|
|
EnviroShield Max
|
0.34
|
54
|
0.21
|
0.50
|
|
Double Hung Window
|
EnviroShield Plus
|
0.33
|
53
|
0.32
|
0.55
|
|
EnviroShield Max
|
0.33
|
53
|
0.22
|
0.50
|
|
Double Sliding Window
|
EnviroShield Plus
|
0.33
|
54
|
0.32
|
0.56
|
|
EnviroShield Max
|
0.33
|
54
|
0.21
|
0.50
|
|
Casement Window
|
EnviroShield Plus
|
0.31
|
58
|
0.30
|
0.52
|
|
EnviroShield Max
|
0.31
|
58
|
0.20
|
0.46
|
|
Picture Window
|
EnviroShield Plus
|
0.33
|
55
|
0.35
|
0.60
|
|
EnviroShield Max
|
0.33
|
55
|
0.24
|
0.54
|
|
Vinyl Patio Door
|
EnviroShield Plus
|
0.36
|
53
|
0.31
|
0.53
|
|
EnviroShield Max
|
0.36
|
53
|
0.21
|
0.47
|
Go to our 
web page to learn more on our patented system.