_If_ I lived north of where I do now, I'd have bought a clear plastic window-well cover. (The "deep-dish" kind, not the sexy new low-profile type.) Cut your hole in the back to fit your hose, epoxy to bench and you should be good to go.
However, I live in North Carolina, (state motto: "Basements? Yew plannin' on raisin' yersef sum cave crickets???") and there's _no_ call for the borgs to carry window-well covers.
So I duct-taped the hell out of a bunch of precisely cut pieces of
1/4" ply and formed a shell. Duct-taped that to the bench, drilled a
4-inch hole in the bench, shoved a PVC elbow through it, ran a bit of pipe out the bottom and to the front of the bench, and when ready, I just shove on the 4" flex hose let 'er rip.
It doesn't look pretty (1), but _nothing_ escapes the "Shroud o' Manco".
I'll dig up a photo if you need one.
Michael Baglio (1) Actually, I think it looks snazzy as hell.
I'm hoping I can fabricate something very similar. In the process I plan to use 6" ducting vs 4". The airflow is double. I'll be taping into my DC line.
I agree about the health concerns. If not already, you may want to consider a good back for your DC. Those stock bags are not very good at stopping the
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