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The air conditioner is dryfit in its aperture. Above it is the back panel of the draft box. The 2x4s protrude from the wall to form a cleat that the removable box will rest on.
The air conditioner is dryfit in its aperture. Above it is the back panel of the draft box. The 2x4s protrude from the wall to form a cleat that the removable box will rest on.