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Ty-Stik said:I see that the exterior opening is picture framed with a 1x4. If you also have wood trim around the inside of the frame, remove one leg (vertical piece of trim) from opposing sides. There should be clearance on one side or the other ( left/right). If not drill a hole through the cripple (2x4 next to the aluminum sliding door frame. Pack fibreglas into any openings as an air stop.
If you have no trim/molding on the inside wall, (picture frame) go to the floor and 3 inches to side of the door frame, drill your hole 2 1/2 inches above the floor. This will clear the 2x4 mud sill/plate. Touch up is very easy with drywall mud or spackle. Drill from the inside to avoid damaging the drywall.
When you decide to end your grow, replace the trim/molding. That easy.
Ty-Stik said:ThereIsHope--------considering the alternative I gave him, he will drill a hole as you suggested. 1/2" hole works better for pulling Romex through, no binding/pinching.