Oatey 34054 Access Panel, 4-Inch x 6-Inch Will not attack Plastic pipe. Polyethylene sleeving is 4 mils thick. The material accommodates 1/2-Inch - 1-Inch pipe in red (for hot water pipe) and blue (for cold water pipe) Protects copper and Plastic in concrete For non code installations Can be painted, wallpapered or tiled to match any decor