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The use of I=B=R Rating @ 4 GPM is limited to installations where flow rate is known to
be equal to or greater than 4 GPM. If flow rate is unknown, use 1 GPM rating.
I=B=R Ratings include 15% addition to water heat capacity.
Hot water ratings shown are at the STANDARD WATER FLOW RATE of 500 lb/hr (1 GPM) and
2,000 lbs/hr (4 GPM) with 65° entering air temperature.
Rating base on active length. Difference between active and total length is 3".
Aluminum fins are 2 11/32" x 1 7/8" x .008" thick, spaced 65 per
foot (unpainted).
All hot water ratings shown in this table determined in conformance with I=B=R
Baseboard Rating commitee.
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