Manufacturer Profile
Qualum International (9418-5311 Quebec Inc.)
View all NRCan-certified window series and their energy efficiency metrics.
93
Product Series
37.8
Avg ER Score
Certified Product Series
H4600(AUV)_H1_1.1/4_PLUX-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.28ER: 37
#NR13904-...
U-Factor: 1.27ER: 37
#NR13904-...
U-Factor: 1.27ER: 35
H4600(AUV)_H1_1.1/4_PTLUX#2-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.08ER: 39
#NR13904-...
U-Factor: 1.08ER: 39
#NR13904-...
U-Factor: 1.09ER: 38
H4600(FX)_H1_1.1/4_PCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1ER: 46
#NR13904-...
U-Factor: 1ER: 46
#NR13904-...
U-Factor: 1.22ER: 43
H4600(AUV)_H1_1.1/4_GCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.26ER: 36
#NR13904-...
U-Factor: 1.28ER: 36
#NR13904-...
U-Factor: 1.28ER: 34
H4600(AUV)_H1_1.1/4_8071#2-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.08ER: 39
#NR13904-...
U-Factor: 1.08ER: 39
#NR13904-...
U-Factor: 1.09ER: 38
A4600(FX)_H2_1.1/4_PCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.1ER: 44
#NR13904-...
U-Factor: 1.1ER: 43
#NR13904-...
U-Factor: 1.1ER: 41
A4600(FX)_H2_1.1/4_PLUX-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.33ER: 40
#NR13904-...
U-Factor: 1.32ER: 40
#NR13904-...
U-Factor: 1.33ER: 37
A4600(FX)_H2_1.1/4_PTLUX-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.1ER: 42
#NR13904-...
U-Factor: 1.1ER: 39
#NR13904-...
U-Factor: 1.1ER: 37
A4600(FX)_H2_1.1/4_GCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.32ER: 39
#NR13904-...
U-Factor: 1.32ER: 39
#NR13904-...
U-Factor: 1.32ER: 36
A4600(FX)_H2_7/8_GCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.62ER: 36
#NR13904-...
U-Factor: 1.67ER: 35
A4600(FX)_H2_7/8_GUCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.67ER: 36
A4600(FX)_H2_1.1/4_8071#2-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.1ER: 42
#NR13904-...
U-Factor: 1.1ER: 42
#NR13904-...
U-Factor: 1.1ER: 42
H4600(FX)_H1_1.1/4_8071#2-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1ER: 44
#NR13904-...
U-Factor: 0.99ER: 44
#NR13904-...
U-Factor: 1ER: 44
H4600(FX)_H1_7/8_GUCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.56ER: 39
#NR13904-...
U-Factor: 1.56ER: 36
H4600(FX)_H1_7/8_PLUX-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.57ER: 38
#NR13904-...
U-Factor: 1.54ER: 38
#NR13904-...
U-Factor: 1.54ER: 36
A4600(PAN)_H2_1.1/4_PLUX-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.32ER: 43
#NR13904-...
U-Factor: 1.31ER: 43
#NR13904-...
U-Factor: 1.32ER: 39
H4600(BAT)_H1_1.1/4_8071#2-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.08ER: 39
#NR13904-...
U-Factor: 1.08ER: 39
#NR13904-...
U-Factor: 1.09ER: 38
A4600(PAN)_H2_1.1/4_PTLUX#2-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.07ER: 45
#NR13904-...
U-Factor: 1.07ER: 45
#NR13904-...
U-Factor: 1.08ER: 44
A4600(PAN)_H2_7/8_GCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.64ER: 38
#NR13904-...
U-Factor: 1.68ER: 37
#NR13904-...
U-Factor: 1.68ER: 34
A4600(PAN)_H2_7/8_PCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.64ER: 39
#NR13904-...
U-Factor: 1.64ER: 39
#NR13904-...
U-Factor: 1.64ER: 36
A4600(PAN)_H2_1_PLUX-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.67ER: 38
#NR13904-...
U-Factor: 1.67ER: 35
A4600(PAN)_H2_1.1/4_8071#2-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.07ER: 45
#NR13904-...
U-Factor: 1.07ER: 45
#NR13904-...
U-Factor: 1.07ER: 45
A4600(PAN)_H2_1.1/4_PCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.07ER: 47
#NR13904-...
U-Factor: 1.07ER: 46
#NR13904-...
U-Factor: 1.07ER: 44
H4600(PAN)_H1_7/8_PCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.55ER: 41
#NR13904-...
U-Factor: 1.55ER: 41
#NR13904-...
U-Factor: 1.55ER: 38
A4600(PAN)_H2_7/8_PLUX-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.64ER: 39
#NR13904-...
U-Factor: 1.68ER: 38
#NR13904-...
U-Factor: 1.64ER: 36
A4600(AUV)_H2_1.1/4_PTONE#2-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.19ER: 27
#NR13904-...
U-Factor: 1.19ER: 26
#NR13904-...
U-Factor: 1.19ER: 25
H4600(FX)_H1_7/8_STCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.53ER: 39
#NR13904-...
U-Factor: 1.53ER: 36
A4600(PAN)_H2_1_SDCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.67ER: 40
#NR13904-...
U-Factor: 1.67ER: 36
A4600(PAN)_H2_7/8_SDCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.64ER: 40
#NR13904-...
U-Factor: 1.64ER: 37
A4600(PAN)_H2_1.1/4_PTONE#2-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.01ER: 34
#NR13904-...
U-Factor: 1.01ER: 33
#NR13904-...
U-Factor: 1.01ER: 32
A4600(PAN)_H2_1.1/4_GCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.31ER: 42
#NR13904-...
U-Factor: 1.31ER: 42
#NR13904-...
U-Factor: 1.31ER: 39
H4600(PAN)_H1_1.1/4_PCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 0.98ER: 49
#NR13904-...
U-Factor: 0.98ER: 48
#NR13904-...
U-Factor: 1.21ER: 46
H4600(PAN)_H1_7/8_SDCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.55ER: 42
#NR13904-...
U-Factor: 1.55ER: 39
#NR13904-...
U-Factor: 1.55ER: 35
H4600(BAT)_H1_1.1/4_PTLUX#2-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.08ER: 39
#NR13904-...
U-Factor: 1.08ER: 39
#NR13904-...
U-Factor: 1.1ER: 38
H4600(PAN)_H1_1.1/4_PTLUX#2-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 0.98ER: 47
#NR13904-...
U-Factor: 0.97ER: 47
#NR13904-...
U-Factor: 0.98ER: 47
H4600(AUV)_H1_1.1/4_PCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.07ER: 41
#NR13904-...
U-Factor: 1.07ER: 40
#NR13904-...
U-Factor: 1.07ER: 38
H4600(PAN)_H1_7/8_PLUX-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.55ER: 41
#NR13904-...
U-Factor: 1.58ER: 40
#NR13904-...
U-Factor: 1.55ER: 38
H4600(FX)_H1_7/8_PCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.53ER: 39
#NR13904-...
U-Factor: 1.53ER: 39
#NR13904-...
U-Factor: 1.53ER: 36
H4600(FX)_H1_7/8_GCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.53ER: 38
#NR13904-...
U-Factor: 1.56ER: 37
#NR13904-...
U-Factor: 1.53ER: 35
H4600(FX)_H1_1.1/4_PTLUX-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 0.99ER: 45
#NR13904-...
U-Factor: 0.99ER: 42
#NR13904-...
U-Factor: 0.99ER: 39
H4600(BAT)_H1_1.1/4_GCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.28ER: 36
#NR13904-...
U-Factor: 1.26ER: 36
#NR13904-...
U-Factor: 1.28ER: 34
H4600(FX)_H1_1.1/4_PLUX-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.2ER: 43
#NR13904-...
U-Factor: 1.22ER: 43
#NR13904-...
U-Factor: 1.2ER: 40
H4600(BAT)_H1_1.1/4_PCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.07ER: 41
#NR13904-...
U-Factor: 1.07ER: 40
#NR13904-...
U-Factor: 1.07ER: 38
H4600(BAT)_H1_1.1/4_PTONE#2-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.03ER: 31
#NR13904-...
U-Factor: 1.03ER: 29
#NR13904-...
U-Factor: 1.03ER: 28
A4600(BAT)_H2_1.1/4_8071#2-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.26ER: 35
#NR13904-...
U-Factor: 1.25ER: 35
#NR13904-...
U-Factor: 1.25ER: 35
A4600(BAT)_H2_1.1/4_PCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.44ER: 34
A4600(BAT)_H2_1.1/4_PTONE#2-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.19ER: 27
#NR13904-...
U-Factor: 1.19ER: 26
#NR13904-...
U-Factor: 1.19ER: 25
H4600(BAT)_H1_7/8_GUCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.58ER: 34
H4600(BAT)_H1_7/8_SDCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.53ER: 35
H4600(PAN)_H1_1.1/4_GCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.2ER: 44
#NR13904-...
U-Factor: 1.21ER: 44
#NR13904-...
U-Factor: 1.21ER: 41
H4600(PAN)_H1_1.1/4_PLUX-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.22ER: 45
#NR13904-...
U-Factor: 1.2ER: 45
#NR13904-...
U-Factor: 1.2ER: 42
H4600(PAN)_H1_7/8_GCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.55ER: 40
#NR13904-...
U-Factor: 1.58ER: 39
#NR13904-...
U-Factor: 1.58ER: 36
H4600(FX)_H1_1.1/4_GCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.2ER: 42
#NR13904-...
U-Factor: 1.22ER: 41
#NR13904-...
U-Factor: 1.2ER: 39
A4600(PAN)_H2_7/8_GUCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.68ER: 39
#NR13904-...
U-Factor: 1.68ER: 35
H4600(PAN)_H1_1.1/4_PTONE#2-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 0.91ER: 37
#NR13904-...
U-Factor: 0.91ER: 35
#NR13904-...
U-Factor: 1.18ER: 34
H4600(FX)_H1_1.1/4_PTLUX#2-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1ER: 44
#NR13904-...
U-Factor: 1.01ER: 44
#NR13904-...
U-Factor: 1ER: 42
H4600(PAN)_H1_1_PLUX-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.57ER: 41
#NR13904-...
U-Factor: 1.57ER: 37
#NR13904-...
U-Factor: 1.57ER: 34
H4600(PAN)_H1_7/8_STCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.55ER: 42
#NR13904-...
U-Factor: 1.55ER: 38
#NR13904-...
U-Factor: 1.55ER: 35
A4600(FX)_H2_1.1/4_PTLUX#2-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.1ER: 42
#NR13904-...
U-Factor: 1.11ER: 42
#NR13904-...
U-Factor: 1.1ER: 39
H4600(PAN)_H1_1.1/4_8071#2-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 0.98ER: 47
#NR13904-...
U-Factor: 0.98ER: 47
#NR13904-...
U-Factor: 0.97ER: 47
A4600(AUV)_H2_1.1/4_PTLUX#2-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.25ER: 35
#NR13904-...
U-Factor: 1.24ER: 35
#NR13904-...
U-Factor: 1.24ER: 35
H4600(BAT)_H1_7/8_PCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.54ER: 34
#NR13904-...
U-Factor: 1.54ER: 34
H4600(PAN)_H1_7/8_GUCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.58ER: 41
#NR13904-...
U-Factor: 1.58ER: 38
#NR13904-...
U-Factor: 1.58ER: 34
H4600(AUV)_H1_7/8_PLUX-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.54ER: 34
H4600(FX)_H1_1.1/4_PTONE#2-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 0.94ER: 35
#NR13904-...
U-Factor: 1.18ER: 33
#NR13904-...
U-Factor: 0.94ER: 33
H4600(AUV)_H1_1_PLUX-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.55ER: 34
A4600(PAN)_H2_7/8_STCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.64ER: 40
#NR13904-...
U-Factor: 1.64ER: 36
A4600(FX)_H2_7/8_PLUX-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.67ER: 36
#NR13904-...
U-Factor: 1.63ER: 36
A4600(BAT)_H2_1.1/4_PTLUX#2-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.26ER: 35
#NR13904-...
U-Factor: 1.25ER: 35
#NR13904-...
U-Factor: 1.25ER: 35
H4600(BAT)_H1_1.1/4_PLUX-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.26ER: 38
#NR13904-...
U-Factor: 1.28ER: 37
#NR13904-...
U-Factor: 1.26ER: 35
H4600(BAT)_H1_1_PLUX-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.54ER: 34
H4600(PAN)_H1_1_SDCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.57ER: 42
#NR13904-...
U-Factor: 1.57ER: 38
#NR13904-...
U-Factor: 1.57ER: 35
A4600(FX)_H2_1.1/4_PTONE#2-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.04ER: 33
#NR13904-...
U-Factor: 1.04ER: 31
#NR13904-...
U-Factor: 1.04ER: 30
H4600(FX)_H1_1_PLUX-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.55ER: 38
#NR13904-...
U-Factor: 1.55ER: 35
H4600(AUV)_H1_1.1/4_PTONE#2-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.02ER: 31
#NR13904-...
U-Factor: 1.02ER: 30
#NR13904-...
U-Factor: 1.02ER: 28
H4600(AUV)_H1_7/8_SDCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.54ER: 35
A4600(FX)_H2_7/8_SDCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.63ER: 38
#NR13904-...
U-Factor: 1.63ER: 34
A4600(BAT.INT)_1-3
Aluminum/Vinyl
Top Variants by Energy Rating
#NR001116...
U-Factor: 1.08ER: 43
#NR001116...
U-Factor: 1.12ER: 42
#NR001116...
U-Factor: 1.08ER: 42
H4600(FX)_H1_7/8_SDCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.54ER: 40
#NR13904-...
U-Factor: 1.54ER: 36
A4600(AUV)_H2_1.1/4_8071#2-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.25ER: 35
#NR13904-...
U-Factor: 1.24ER: 35
#NR13904-...
U-Factor: 1.24ER: 35
A4600(FX)_H2_7/8_PCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.62ER: 37
#NR13904-...
U-Factor: 1.62ER: 37
#NR13904-...
U-Factor: 1.62ER: 34
A4600(FX)_H2_1_PLUX-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.65ER: 36
H4600(AUV)_H1_7/8_PCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.55ER: 34
#NR13904-...
U-Factor: 1.55ER: 34
A4600(BAT.INT)_1_GUCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR001116...
U-Factor: 1.7ER: 34
A4600(BAT.INT)_1_PLUX-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR001116...
U-Factor: 1.66ER: 34
A4600(FX)_H2_7/8_STCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.62ER: 37
#NR13904-...
U-Factor: 1.62ER: 34
H4600(BAT)_H1_7/8_STCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.53ER: 35
H4600(BAT)_H1_7/8_PLUX-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.53ER: 34
H4600(BAT)_H1_1_SDCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.54ER: 35
H4600(AUV)_H1_7/8_STCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.54ER: 34
MP79-F
Aluminum
Top Variants by Energy Rating
#NR001116...
U-Factor: 0.98ER: 48
#NR001116...
U-Factor: 1.22ER: 41
#NR001116...
U-Factor: 1.66ER: 39
A4600(AUV)_H2_1.1/4_PCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.43ER: 34
H4600(AUV)_H1_1_SDCL-ARG
Aluminum/Vinyl
Top Variants by Energy Rating
#NR13904-...
U-Factor: 1.55ER: 35