Surplus from new build, all unused: • (6) 5’ lengths 6” galvanized rigid duct • (6) 5’ lengths 4” galvanized rigid duct • Assorted 4” & 6” fittings (elbows, collars, caps, plastic flap vents) • (2) 50’ rolls 4” R4.2 insulated flex duct $150 OBO. Will not separate. Pickup in Winthrop. Email mcclintoc...