Current HVAC unit: Carrier 48 DR 012 over a 77″ wide by 70″ roof opening (Carrier unit replaced an earlier, larger unit. Roof opening size was kept the same at the time).
Replacement Unit: Trane YSC120F with base dimension 88 5/8″ long (parallel to the 70″ roof opening dimension) and 53 1/4″ wide. Need curb adapter between existing roof opening and new unit. Would like to keep roof opening the the same as is. new roof thickness is 6″ (TPO Cool Roof).
I would appreciate any help you can provide.
Best regards, F. H. (Rick) Furnace, PE
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