Manufacturer Profile
Northerm Windows and Doors
View all NRCan-certified window series and their energy efficiency metrics.
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Product Series
31.6
Avg ER Score
Certified Product Series
NWD-4000AW
Vinyl
Top Variants by Energy Rating
#NR6734-4...
U-Factor: 1ER: 32
#NR6734-4...
U-Factor: 1.03ER: 31
#NR6734-4...
U-Factor: 0.87ER: 31
NWD-3800AW
Vinyl
Top Variants by Energy Rating
#NR6734-4...
U-Factor: 1.19ER: 30
#NR6734-4...
U-Factor: 0.99ER: 30
#NR6734-4...
U-Factor: 1.21ER: 29
NWD-4000LPC
Vinyl
Top Variants by Energy Rating
#NR6734-4...
U-Factor: 0.9ER: 40
#NR6734-4...
U-Factor: 0.93ER: 39
#NR6734-4...
U-Factor: 0.95ER: 38
NWD-3800CA
Vinyl
Top Variants by Energy Rating
#NR6734-4...
U-Factor: 1.2ER: 30
#NR6734-4...
U-Factor: 0.98ER: 30
#NR6734-4...
U-Factor: 1.17ER: 30
NWD-3800LPC
Vinyl
Top Variants by Energy Rating
#NR6734-4...
U-Factor: 0.82ER: 38
#NR6734-4...
U-Factor: 1.08ER: 38
#NR6734-4...
U-Factor: 1.1ER: 37
NWD-4000CA
Vinyl
Top Variants by Energy Rating
#NR6734-4...
U-Factor: 1.02ER: 32
#NR6734-4...
U-Factor: 0.99ER: 32
#NR6734-4...
U-Factor: 1.03ER: 31