Now available in Galvanized, Aluminum, and Stainless with optional no. 4 finish. End cap with bird screen, 1/2" galvanized wire mesh. Available for 3" to 24" Diameter Ducting. ORDERING NOTES: Unless specified, 3" through 24" is QF. Over 24" is flanged. Data subject to change without notice. Stainless steel components requiring flanges will be supplied with stainless steel flanges unless otherwise specified. For special parts or items to be custom manufactured, contact us for quotation.