Manufacturer Profile
GR8 Windows Ltd.
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
S-3100
Vinyl
Top Variants by Energy Rating
#NR14020-...
U-Factor: 0.86ER: 36
#NR14020-...
U-Factor: 0.86ER: 35
#NR14020-...
U-Factor: 0.95ER: 34
S-3050
Vinyl
Top Variants by Energy Rating
#NR14020-...
U-Factor: 0.95ER: 32
#NR14020-...
U-Factor: 0.95ER: 31
#NR14020-...
U-Factor: 1.04ER: 30
S-3000
Vinyl
Top Variants by Energy Rating
#NR14020-...
U-Factor: 0.96ER: 31
#NR14020-...
U-Factor: 1.04ER: 30
#NR14020-...
U-Factor: 0.96ER: 30