The no 503SATTOD Air-Tite 90 deg saddle Take-Off with damper is available in 8 sizes from 5 in through 14 in. Air-Tite series starting collars have a gasketed flange to ensure the best possible sealing at the joint.
M&M Saddle Take-Off, Air-Tite, Series: 503SATTOD, 7 in Size, 90 deg Angle, 28 ga Gauge, Steel, Galvanized