connections at the unit to reduce noise transmission is
Round
Round
SQUARE TO ROUND
UNIT 2 Ton 2 1/2 Ton 3 Ton 3 1/2 /4 Ton
Min. Filter Size (1)20 x 20 x 1 (1)20 x 25 x1 (1)25 x 25 x1 (2)20 x 20 x 1