Dan Pick
New Member
Has to be the oldest plumbing question in the book, but I can't seem to find a direct answer. 1/2" CWT L or M (red or blue) for residential application? Running new supply lines for shower valve, wet bar, laundry sink and washer hose supply box this weekend. Any preferences. guys? Seems to run about 40% more for the thick wall type "L". Do I need it?