Put them wherever they are most convenient. Duct tape and flexible hose is your friend... and don't be afraid to cut it in half if it suits,
pottz replied 32 minutes ago that will work ok barb. i do recommend getting the self cleaning gates though. damhikt ! another gate to look at is the ones made by woodpeckers. wont clog and 100% air flow. ive been changing mine out to those.
Ditto... after pottzy made a comment about them in a blog... but never made a review! Bought a pair with my last Woodpeckers' purchase and waiting till the current ones need clearing for replacement,
Before you decide to make your own, check out this blog I wrote on LJ about shop made blastgates. (stupid ideas).
For anyone into SketchUp,
If your first cut is too short... Take the second cut from the longer end... LBD
