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working on a job in philly i encounterd a number of multi-fan convectors; actually 4 fans per convector. The only name on the units were Herman-Nelson which apparently now focuses on comercial heaters. I had cabinets with dimensions of 80L x 18w.x 27h and 80Lx 14w x 30h. I cant find the edr for these units tp complete the connected load. Any help would be appreciated!