what size are medical wall outlets?
 The medical gas outlet shall be an Amico Alert-1 series. Outlets shall be manufactured with a 6-1/2” or 165 mm length type “K” 1/2” of 12.7 mm outside diameter size copper inlet pipe stub, which is silver brazed to the outlet body. The body shall be of 1-5/16” or 33 mm diameter, one piece brass construction. 