Incomplete 2 Systems worked on US Payne Straight A/C: HO stated system was not cooling. Found system low in ref. 3rd time. Performed a leak search. Found leak at the evap. Coil. System holds 7 lbs of 410. 3 ton Up Air Flow Payne Case Coil. Case coil dimensions: 17.5Width x 17Height x 17.5Depth. Will need to order case coil from East Coast. Didnt order due time being after 5.