8'' Inch Duct Collar Air Tight -for Connecting Flex Ducting (Metal w/Rubber Gasket, 8'') - - Amazon.com
Vent Systems 8" inch Air Vent Duct Connector Flange with Rubber Gasket. Straight Ventilation Pipe Metal Ducting Connector Wall Plate for Cooling Heating Ventilation System HVAC 200mm. - - Amazon.com
PremiumX 2X Mastschelle Sat Mast Rohr Doppel Schelle Halter Stahl verzinkt Mastdoppelschelle bis 60mm Mast: Amazon.de: Elektronik & Foto
Fallrohr Stahl verzinkt NW 60 mm Länge 2 Meter : Amazon.de: Baumarkt
Amazon.com: Grease Duct Kit- Single Wall Stainless Steel Pre-Engineered Round Grease Ductwork Package. Used for the removal of smoke and grease-laden vapors. No onsite welding required (12" Round, with Y Tee) :
Dachrinnenset 4-16 m lang verzinkt Roofart 7 TLG 127mm (NG 280) inkl. Fallrohr mit Stirnbretthaltern oder Rinneisen (12m Rinne + 2m Fallrohr, mit Stirnbretthaltern) : Amazon.de: Baumarkt
Vent Systems 4" inch Air Vent Duct Connector Flange Straight Ventilation Pipe Metal Ducting Connector Plate For Cooling Heating Ventilation System HVAC - - Amazon.com
6'' Inch Duct Collar Air Tight -for Connecting Flex Ducting (Metal, 6'') - - Amazon.com
Amazon.com : S&M s & m 550256 Triple 3 Way Valve 3/4 "x 3/4" : Tools & Home Improvement
MKK - 10818-1 - 90° Bogen Winkel Wickelfalzrohr Lüftung Rohr Verzinkt Lüftungsrohr Kanal Ø 80 mm : Amazon.de: Baumarkt