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Boomer313 12-08-2008 10:48 AM

Basement Bypass door under ductwork
I want to install a bypass door to cover an opening in a new wall I put up in my basement. The problem is that the 4' opening is underneath furnace ductwork. The ductwork is about 6' 1" off the floor. You know where I am going with this....I want to install the bypass door without having to install header track under the ductwork. That would lower the header space to a head bangin height less than 6'.
Any ideas, pointers, etc. is appriciated.


CrpntrFrk 12-08-2008 11:15 AM

Post pics please!

Boomer313 12-08-2008 11:58 AM

Pics will be tough
I will work to post som pics. Pics may help, but the space is still only partially constructed. Any ideas without pics is appriciated.

NYCtinman 12-08-2008 08:38 PM

Hire a duct guy to install a transition, so you can gain some height. Ex. if the duct you have now is 10'' high x 16'' wide you can remove a section (to accommodate your door width) and install a duct 6'' x 30'' --

AllanJ 12-11-2008 08:17 PM

Can you spare any headroom at all?

(edited) I would get a 1/4 inch thick steel strip with turned up edges (formed into a shallow trough) 1" high x 3-1/2" wide overall (assuming 2x4 framing) to use as the doorway header. This will pass flat just under the duct and extend at least a foot into the wall framing on each side. The wall framing has the cap lower so the metal strip fits on top with plenty of drilled holes for nailing to the cap. There is additional framing and cripples above the metal strip to fill any empty space up to the ceiling. Beyond the metal strip the wall framing would transition to full ceiling height.

* The turned up edges are used to keep the strip from sagging in the middle. If the doorway can be made much narrower than 4 feet, a flat 1/4 inch steel strip would work.

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