We will be installing a 2 inches vent in the wall that will venting the washing machine box that is slow drain and gurgling. We will have to cut sheets rock to access the plumbing before the wall. Once we are in there we will cut out the old drain and install a new P Trap and install a clean out on the wall for any future maintenance to the drain we will then plumb the vent through the wall and out the roof there will be a roof flashing put on and sealed to prevent leaks.