Master Flow 6 in. Flexible Duct and Sheet Metal Connector Splice Collar FC6 - The Home Depot

The Master Flow 6 in. Starting Collar has a snap-together design for easy assembly. This starting collar can be used to transition from a flat surface

Master Flow 6 in. Starting Collar Take Off - Snap Together SCF6 - The Home Depot

Master Flow 6 in. Air-Tite Take-Off ATTO6 - The Home Depot

Master Flow 6 in. Starting Collar Take Off DSCF6 - The Home Depot

Master Flow 4 in. Flexible Duct and Sheet Metal Connector Splice Collar FC4 - The Home Depot

Master Flow 18 in. Flexible Duct and Sheet Metal Connector Splice Collar FC18 - The Home Depot

HVAC - Miscellaneous Parts

Master Flow 6 in. x 25 ft. Insulated Flexible Duct R6 Silver Jacket F6IFD6X300 - The Home Depot

Master Flow 7 in. Flexible Duct and Sheet Metal Connector Splice Collar FC7 - The Home Depot

Master Flow 6 in. to 5 in. Round Reducer R6X5 - The Home Depot

Master Flow 6 in. Ductboard Collar with Damper DSCF152D6 - The Home Depot

BEHR PREMIUM 1 gal. #N290-3 Comfy Beige Satin Enamel Interior/Exterior Cabinet, Door & Trim Paint 752001 - The Home Depot

How-To Connect Flex Duct to a Collar - The Duct Shop

Van Heusen Men's Slim-Fit Flex Collar Stretch Solid Dress Shirt

Van Heusen Slim Fit Ultra Flex Collar Dress ShirtFrost, Clearance Dress Shirts

Duravent 3 PelletVent Pro Flex Trim Collar 3PVP-FTC - ComfortBilt

Flexible Stainless Installation Collar 20