OATEY 2121A-1 Dearborn® 1-1/2" x 16" Center To Center, Hi-Line - Budget Ga.

That 16 inches is the distance between the two vertical tubes of the waste assembly, center of one to center of the other. It has to match the spread between your tub's drain and overflow connections. The tubing itself is 1-1/2 inch nominal. If your tub's drain-to-overflow spread is shorter or longer, this part won't line up without reworking the rough-in.

Three things decide it. First, the drain-to-overflow center distance on your tub has to be 16 inches. Second, the drain tubing has to be 1-1/2 inch nominal, which is standard for tub waste. Third, your tub has to accept a flanged (Hi-Line) connection rather than slip-joint. Get those three right and the 2121A-1 drops in; miss any one and it will not seal.

Hi-Line refers to a flanged connection style on the Dearborn 2121A-1, where the overflow and drain tubes seat against a flange rather than a slip-joint or threaded arrangement. It is the configuration to order when the tub or the existing assembly is set up for flanged fittings. If your tub takes slip-joint tubing, you want a different connection type, because the flanged parts will not seal against it.

Brass, in a chrome finish. Brass tubing holds up better than plastic in a tub waste that gets handled during service, and the chrome is what you want where any of the assembly is visible at the overflow plate or drain. Weight is listed at 1.2 lbs.

Budget Gauge is the lightest wall thickness Dearborn offers on this brass waste and overflow. Oatey builds the same 1-1/2 inch by 16 inch Hi-Line configuration in heavier gauges as well. For a rental turn or a residential replacement, budget gauge is usually fine; for a hotel, dorm, or anywhere the assembly sees frequent service, order up to a heavier gauge instead.