The bathroom sink rough-in dimensions are as follows: The center of the lav’s drain is located 18” (approximately) above the finished floor. Also notice the drain is centered ri… See more

This bathroom lav is roughed-in with a 1.5” sanitary in the vertical position (please don’t use a wye here). This makes our bathroom sink drain 1.5”, the vent 1.5”, the trap arm 1.5”, and th… See more

You will need a 1.5″ trap adapter and a 1.5″ plastic tubing p-trap(sometimes called trim trap). Trim Trap kits come with two different sizes of washers. You’ll use the 1.5″ x 1.25″ slip joint wa… See more

In the above example, there are two acceptable fittings to choose from: Wye with 45 …or a Combination Wye and 1/8 Bend (Combo Fitting) We’re using a 3”x3”x1.5” … See more