OK- My new house will have an AV closet directly behind the wall where my LCD will be on. I plan on building a small pass through window (4"x4") to run the power and AV cables to the closet. I plan on framing it with 1x4's, patching the dry wall and painting (Think of a large pass through window that you would build between a kitchen and a dinning room.... only inches instead of feet}. My question is, will this be up to code. I'm assuming it will be, as I will not be passing cables or power through the cavity of the wall, but I'm not 100% sure. Thanks for any help.