Six bathtubs on this site are 1600mm long. Their heights are 520mm, 550mm, 600mm, 750mm, 780mm and 780mm.
That 260mm gap is the full height range of every live bathtub listing in the catalogue, and all of it sits inside one nominal length. Length is the number most people shop on. It describes less of the object than you would expect.
The six 1600mm bathtubs, live right now
| Model | Brand | Length | Width | Height |
|---|---|---|---|---|
| ATXD-06279 | Aalto | 1600mm | 840mm | 520mm |
| ATXD-06214-1.6 | Aalto | 1600mm | 800mm | 550mm |
| NNST-045-SPA-1600 | NOBEL | 1600mm | 800mm | 600mm |
| NNST-020-1600 | NOBEL | 1600mm | 700mm | 750mm |
| NNST-825-BW-1600 | NOBEL | 1600mm | 760mm | 780mm |
| NNST-825-W-1600 | NOBEL | 1600mm | 760mm | 780mm |
Same length on all six. Widths 140mm apart, heights 260mm apart. Order on length alone and you have picked one number out of three.
All 43 live bathtub listings publish length, width and height in millimetres, in that order. The Aalto listings write it as Size: 1600x840x520mm. The NOBEL descriptions write it as Measuring 1600 x 700 x 750mm. Same three numbers, same sequence, different formatting.
Length decides the floor run, and it is the number in the model code
Length is usually what the model code encodes. ATXD-06214 is sold at 1400, 1500, 1600, 1700 and 1800mm. Across all five, height stays at 550mm and width moves only between 750mm and 810mm. NNST-045-SPA runs 1350, 1500, 1600 and 1700mm, all of them 600mm high.
So within one family, length is the variable and height is fixed. Across families, length tells you nothing at all about height. That is how two 1600mm tubs end up 260mm apart.
Length is also the measurement buyers usually get right, because it is the one they think to take. Measure the wall the tub sits against, then take off anything at either end: a false wall, a skirting, the tap side.
Width decides what gets through the door and how much floor disappears
Live widths run from 700mm to 1500mm. The corner models are square in plan (1300 x 1300mm and 1500 x 1500mm), which is why the figure goes that high; the widest straight tub is 1230mm. Among the six 1600mm tubs on their own, width swings from 700mm to 840mm.
Width is the number that decides delivery. A bathtub does not fold. Measure the door leaf, the frame and the turn in the corridor outside the bathroom, not only the bathroom itself.
It is also the number that eats floor. In a small bathroom, 140mm of extra width can be the difference between a door that swings fully open and one that catches. The same thing catches people out on vanity cabinets, where one model code can be two different sizes.
Height decides whether you step over it or climb into it
Rim height changes what using the tub actually feels like, and it sits at the end of the size line where people stop reading.
At 520mm, the ATXD-06279 free standing bathtub has the lowest rim of the 43 live listings. At 780mm, the two NNST-825 Victorian models are as high as the catalogue goes. That is a step over versus a climb in, and it matters more if anyone using the bathroom is elderly or unsteady.
Height also settles two things people discover late: whether a wall-mounted spout clears the rim, and whether the tub passes under a window sill or a half-height wall. Both are measured from the finished floor, so include your floor build-up in the sum.
Height is the one dimension a product photo will not give you. You cannot stand in a tub before you buy it online, which is a genuine trade-off of buying this way. Reading the third number is how you close that gap.
What a bathtub listing does not tell you
Litre capacity is published on some listings and not others. 31 of the 43 live listings quote a capacity in litres, and all 31 are NOBEL. The Aalto free standing tubs publish size and finish only, so soak volume cannot be compared across the whole range from the listings alone.
Capacity does not track footprint either. NNST-020-1600 is 1600 x 700 x 750mm and publishes 78 litres. NNST-045-SPA-1600 is 1600 x 800 x 600mm, 100mm wider, and publishes 76.
No live bathtub listing publishes an overflow position or a waste size. Nine NOBEL spa models list an Overflow Stopper among their included spa fittings, which is a supplied part and not a dimension. If your plumber needs to know where the waste and overflow sit before the floor screed goes down, confirm it before ordering. Nothing in the size line answers it.
Four numbers to have before you order
- The floor run, which is the tub length plus whatever has to live at either end.
- The widest clear width, plus the door leaf and the corridor turn the tub has to travel through.
- Rim height, measured from the finished floor.
- Waste and overflow position, confirmed separately, because the listing will not carry it.
Same order of operations as checking a toilet's roughing-in distance before ordering. Measure what the plumbing has to meet, then find the product that meets it.
One listing, read end to end
The ATXD-06279 free standing bathtub reads:
Free standing bathtub
Size: 1600x840x520mm
Finished: White
1600mm of floor run. 840mm wide, the widest of the six 1600mm tubs and 140mm more than the narrowest. 520mm high, the lowest rim in the live catalogue. White finish. No litre figure and no overflow spec, because Aalto does not publish either.
That is what the listing supports, and it is enough to decide whether the tub fits your floor and your door. Capacity and waste position are questions to ask before ordering, not things to infer from three numbers.
Common questions
What is a standard bathtub height?
There isn't one. Across the 43 live bathtub listings on ThatRenoStore, rim height runs from 520mm to 780mm. Six of those listings are 1600mm long and they cover that entire range on their own, at 520, 550, 600, 750, 780 and 780mm. Read the third number in the size line for the tub you are actually looking at.
Why do two 1600mm bathtubs look completely different sizes?
Because length is only the first of three numbers. Among the six live 1600mm bathtubs, width runs from 700mm to 840mm and height from 520mm to 780mm. Two tubs can share a length and still be 140mm apart in width and 260mm apart in height.
What size bathtub fits a Singapore HDB bathroom?
That is a measurement, not a model. Live lengths in the catalogue run from 1000mm to 1850mm and widths from 700mm to 1500mm. Measure the wall run, the clear width, and the doorway the tub has to come through, then filter on those three numbers.
Do bathtub listings include the waste and overflow?
No live bathtub listing on the site publishes an overflow position or a waste size. Nine NOBEL spa models list an Overflow Stopper among their included spa fittings, which is a supplied part and not a dimension. Confirm the waste and overflow details before your plumber sets the pipework.
How do I compare how deep a soak I get?
Litre capacity is the closest published figure, and only some listings carry it. 31 of the 43 live bathtub listings quote a capacity, and all 31 are NOBEL. The Aalto free standing tubs publish size and finish only. Capacity does not follow footprint either: NNST-020-1600 at 1600 x 700 x 750mm publishes 78 litres, while the 100mm wider NNST-045-SPA-1600 at 1600 x 800 x 600mm publishes 76.
Shop bathtubs at ThatRenoStore, and read all three numbers before you decide.