cUPC on one side, 2 mm steel on the other
The certification, or the thicker steel?
Two 24-inch linear shower drains within three dollars of each other, both with a 2-inch outlet, adjustable feet and a hair strainer, and both sold without the drain base. One states the plumbing certification an inspector looks for; the other states the thickness of its steel.
| Compared on | 24 in linear shower drain | 24 in linear shower drain, black |
|---|---|---|
| Price on Amazon.com, Oct 29, 2026 | About $51.99 | About $49.58 |
| Certification | cUPC and WaterMark | Not stated |
| Steel | AISI 304, thickness not stated | AISI 304, 2 mm thick |
| Stated drainage | 50.5 L/min (about 13.3 gpm) | 51 L/min (about 13.5 gpm) |
| Outlet | 2 in | 2 in |
| Drain base or flange | Sold separately | Not included |
| Listed on amazon.com | Yes | Yes |
A tick marks the better answer on that line only. Counting ticks does not decide the page — the two verdicts below do, because these products answer different questions.
Take the Neodrain for a permitted shower: cUPC is on the page, and the maker names the drain bases that fit it.
Take the DLONE for a black or gold finish on a job no inspector will see, with 2 mm steel stated.
Both state about 13 gpm, several times what a shower head delivers under federal and state limits.
A 2-inch drain base matched to your pipe and waterproofing. Neodrain notes its drain is not compatible with the Schluter Kerdi system.
24 × 2.75 in channel · 2 in outlet · 50.5 L/min (13.3 gpm) stated · AISI 304 · cUPC and WaterMark · Quadrato grate · leveling feet · drain base sold separately
A 24-inch AISI 304 linear drain, cUPC and WaterMark certified, with a stated 50.5 L/min flow, a 2-inch outlet for a US no-hub drain base sold separately.
Best for: A curbless or walk-in shower being built on a standard 2-inch US drain line
≈ $52
24 in channel · 2 mm AISI 304 · 51 L/min (13.5 gpm) stated · 2 in outlet · tile-insert panels · adjustable legs · matte black · flange not included
A 24-inch matte black linear drain in 2 mm 304 stainless, the cheapest here, stating 51 L/min — with no certification on the page and the flange sold separately.
Best for: A non-permitted shower refresh where a black or gold linear drain is the look
≈ $50
Prices quoted in these summaries are dated readings. The live price is shown next to each product.
