Drainage rate against build height
Is your constraint the water, or the floor?
A shower channel is chosen twice: once by how much water it takes, and once by whether it fits inside your floor. One of these publishes the first figure and not the second; the other publishes both a foot range and a load.
| Compared on | 100 cm black 2-in-1 shower channel, 50 l/min | 90 cm 2-in-1 shower channel, 77–121 mm feet, 300 kg |
|---|---|---|
| Overall length | 100 cm | 90 cm |
| Stated drainage rate | 50 l/min average | Up to 36 l/min |
| Build height | Not stated as a range | Feet adjustable from 77 to 121 mm |
| Grate | Reversible: tileable or satin stainless | Reversible: tileable or stainless |
| Trap | Removable, with an odour stop | Rotates 360°, with an odour stop and a hair strainer |
| Body | 1.5 mm stainless | Welded 304 stainless, stated to hold 300 kg |
| Water seal depth | Not stated by the maker | Not stated by the maker |
| Outlet diameter | Not stated by the maker | Not stated by the maker |
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 LuxeBath for a wide walk-in where a large rain head and a hand shower run together — 50 l/min across a metre of channel is the most water this catalogue moves. Confirm your floor build-up first, because it publishes no height.
Take the Plumbsys when the floor is the unknown. Forty-four millimetres of foot adjustment absorbs a screed that is not the depth the drawing said, and a 360° trap meets whatever waste pipe is already there. 36 l/min is still far more than a shower delivers.
Because the channel body, its trap and the fall of the outlet pipe all have to fit between your finished tile and the structural slab. If your build-up is 70 mm and the channel needs 90, no other specification rescues it.
It is what stops drain smells rising, and it decides how long a trap survives a fortnight away before it dries out. Neither of these publishes it, and neither does any other channel in this catalogue — which is worth knowing rather than assuming.
Shower channel · 100 cm · reversible tileable/satin grate · 1.5 mm body · 50 l/min average stated · height-adjustable · black
The fastest-draining channel in this hub at a stated 50 l/min average, in a black finish, with a grate that flips between tileable and satin.
Best for: A wide walk-in shower with two outlets running, in a bathroom where the floor depth is already known to be generous.
≈ 43 €
Shower channel · 90 cm · 304 stainless welded · feet 77–121 mm · 36 l/min stated · 300 kg load stated · 360° trap · reversible grate
The only channel here that publishes both a foot height range and a load figure — 77 to 121 mm and 300 kg — on a welded 304 body.
Best for: A tiled floor with an unknown or awkward build-up, where the channel has to adapt to the floor rather than the other way round.
≈ £74 / 62 €
