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Residential Gas Water Heaters
Unit of Measure
1 2 3 

Item #

Capacity

First Hour Rating

Input Power

Vent Diameter A

G-R-40T-2-3-12-LP N/A 40 gal N/A 77 gal N/A 40000 BTU N/A 3 in
G-R-40L-1-3-12-LP N/A 40 gal N/A 72 gal N/A 37000 BTU N/A 3 in
G-R-40L-2-3-12-LP N/A 40 gal N/A 72 gal N/A 37000 BTU N/A 3 in
G-R-50T-1-3-6 N/A 50 gal N/A 86 gal N/A 40000 BTU N/A 3 in
G-R-50T-1-4-6 N/A 50 gal N/A 90 gal N/A 48000 BTU N/A 4 in
G-R-50T-2-4-6 N/A 50 gal N/A 90 gal N/A 48000 BTU N/A 4 in
G-R-50T-2-3-6 N/A 50 gal N/A 86 gal N/A 40000 BTU N/A 3 in
G-R-50L-1-3-6 N/A 50 gal N/A 73 gal N/A 40000 BTU N/A 3 in
G-R-50T-1-3-6-LP N/A 50 gal N/A 86 gal N/A 40000 BTU N/A 3 in
G-R-50T-1-4-6-LP N/A 50 gal N/A 90 gal N/A 48000 BTU N/A 4 in
G-R-50T-2-4-6-LP N/A 50 gal N/A 90 gal N/A 48000 BTU N/A 4 in
G-R-50T-2-3-6-LP N/A 50 gal N/A 86 gal N/A 40000 BTU N/A 3 in
G-R-50L-1-3-6-LP N/A 50 gal N/A 73 gal N/A 40000 BTU N/A 3 in
G-R-50T-1-3-12 N/A 50 gal N/A 86 gal N/A 40000 BTU N/A 3 in
G-R-50T-1-4-12 N/A 50 gal N/A 90 gal N/A 48000 BTU N/A 4 in
G-R-50T-2-4-12 N/A 50 gal N/A 90 gal N/A 48000 BTU N/A 4 in
G-R-50T-2-3-12 N/A 50 gal N/A 86 gal N/A 40000 BTU N/A 3 in
G-R-50L-1-3-12 N/A 50 gal N/A 73 gal N/A 40000 BTU N/A 3 in
G-R-50T-1-3-12-LP N/A 50 gal N/A 86 gal N/A 40000 BTU N/A 3 in
G-R-50T-1-4-12-LP N/A 50 gal N/A 90 gal N/A 48000 BTU N/A 4 in
G-R-50T-2-4-12-LP N/A 50 gal N/A 90 gal N/A 48000 BTU N/A 4 in
G-R-50T-2-3-12-LP N/A 50 gal N/A 86 gal N/A 40000 BTU N/A 3 in
G-R-50L-1-3-12-LP N/A 50 gal N/A 73 gal N/A 40000 BTU N/A 3 in
75-76-AS R-6 N/A 75 gal N/A N/A 76000 BTU N/A 4 in
75-76-AS R-6-LP N/A 75 gal N/A N/A 76000 BTU N/A 4 in
Unit of Measure
1 2 3