|Brand||Master Flow||Master Flow||Master Flow||Master Flow|
|Name||6 in. Starting Collar Take Off - Snap Together||8 in. Starting Collar Take Off||6 in. Air-Tite Take-Off||7 in. Air-Tite Take-Off|
|View Product||View Product||View Product||View Product|
Yes, though I have not done so. Comes with two prepunched holes for the damper axle. For my use I applied tape over the holes, but that's overkill as the flex duct I installed also covered those holes.
Yes, that's what I needed and that's what I did. Nice tight fit. See my review for install steps if you need them Most important point, install the collar in its final location before installing the flex duct (otherwise you need a long arm to bend the tabs over :)