April 5, 2015
Okna Sliding Windows are also designated as "Most Efficient 2015" by energystar.gov Wonder Windows can help you make a great decision on energy efficient windows for your home.
Below are some others from the list of "Most Efficient 2015".
Compare and see why Okna Sliding Windows from Wonder Windows should be your top choice.
* for more information on understanding performance ratings see (Understanding NFRC)
*data source
OKNA Windows & Doors
|
Product Line |
CPD Number |
U-Factor |
SHGC |
Frame Type |
PG |
Climate Zones |
|
Insul Tec – 520 / 5520 Series |
OKW-K-21 |
0.16–0.20 |
0.23–0.26 |
Vinyl |
40 |
N, NC |
|
Precision Weld – 420 Series |
OKW-K-24 |
0.17 |
0.25 |
Vinyl |
35 |
N, NC, SC, S |
|
Enviro Star - 820 Series |
OKW-K-30 |
0.20 |
0.25 |
Vinyl |
50 |
N, NC, SC, S |
|
Starmark - 920 Series |
OKW-K-33 |
0.15–0.20 |
0.22–0.25 |
Composite |
40 |
N, NC, SC, S |
Champion Window
|
Product Line |
CPD Number |
U-Factor |
SHGC |
Frame Type |
PG |
Climate Zones |
|
Comfort 365 Extreme Energy |
CHW-A-8 |
0.20 |
0.25 |
Vinyl |
25 |
N, NC, SC, S |
Marvin Windows and Doors
|
Product Line |
CPD Number |
U-Factor |
SHGC |
Frame Type |
PG |
Climate Zones |
|
Wood Ultimate Glider |
MAR-N-400 |
0.20 |
0.21–0.21 |
Wood and Clad Wood |
50 |
N, NC, SC, S |
Pella Corporation
|
Product Line |
CPD Number |
U-Factor |
SHGC |
Frame Type |
PG |
Climate Zones |
|
350 Series Sliding Window (Nail Fin) |
PEL-N-192 |
0.18–0.19 |
0.22–0.24 |
Vinyl |
40 |
N, NC, SC, S |
|
350 Series Sliding Window (Pocket Frame) |
PEL-N-201 |
0.18–0.20 |
0.22–0.24 |
Vinyl |
40 |
N, NC, SC, S |
|
Pella 250 Series Sliding Window with Advanced Low-E |
PEL-N-210 |
0.20 |
0.22–0.25 |
Vinyl |
25 |
N, NC, SC, S |
Soft-Lite LLC
|
Product Line |
CPD Number |
U-Factor |
SHGC |
Frame Type |
PG |
Climate Zones |
|
Barrington |
SSL-A-12 |
0.18–0.20 |
0.18–0.27 |
Vinyl |
40 |
N, NC, SC, S |
|
Barrington |
SSL-A-46 |
0.18–0.20 |
0.18–0.27 |
Vinyl |
40 |
N, NC, SC, S |
|
Bainbridge |
SSL-A-36 |
0.17–0.19 |
0.18–0.27 |
Vinyl |
40 |
N, NC, SC, S |
|
Classic |
SSL-A-60 |
0.17–0.20 |
0.17–0.26 |
Vinyl |
35 |
N, NC, SC, S |
|
Pro |
SSL-A-61 |
0.17–0.20 |
0.17–0.26 |
Vinyl |
35 |
N, NC, SC, S |
|
Imperial LS |
SSL-A-30 |
0.17–0.20 |
0.15–0.24 |
Vinyl |
55 |
N, NC, SC, S |
|
Elements |
SSL-A-28 |
0.16–0.20 |
0.15–0.24 |
Vinyl |
55 |
N, NC, SC, S |
