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$10.00$20.00
Performance Rating of Commercial and Industrial Air Filter Equipment (SI) (AHRI)..
$10.00 $20.00
Induced Draft Furnace Heat Exchanger Inspection (AHRI)..
$5.00 $10.00
Variable Capacity Positive Displacement Refrigerant Compressors and Compressor Units for Air-Conditi..
$41.00 $81.00
Sound Intensity Testing Procedures for Determining Sound Power of HVAC Equipment (AHRI)..