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Factory documentation
Certification scope depends on the selected model and destination market. Request model-specific documents with your quotation.
One number, two metric readings
Three details to check on a 12 inch rough in toilet order
On paper a 12 inch rough in toilet is the easy case. On a purchase order it needs a closer look, because the same nominal setting is printed two ways and many bodies list more than one drain option.
Check the metric figure on each sheet. Most ceramic one-piece and two-piece bodies here print the setting as 300 mm, while the floor-mounted smart toilets Y1, Y2, E5 and E6 print 305 mm, and HSJ-V8200 prints 305 / 400 mm. Both describe the 12 in setting; copy the figure printed for each model when a site drawing already states a metric value.
The second trap is the multi-setting body. HSJ-2332 prints S-trap 100 / 200 / 300 / 400 mm, so one model lists four floor settings, yet each unit is supplied for one of them. A P-trap version, where offered, is printed at 180 mm, which is a separate wall-outlet setting rather than another floor distance.
The third is flush naming. Several bodies list alternative versions, such as Siphonic / Washdown on HSJ-2347 and Washdown / Swirl on HSJ-2390, and those are listed as alternative versions of the same model. State one on every order line.
74 models, sorted by build
The 12 in range by body type and flush system
Totals across all 74 models that print the 12 in S-trap setting.
- 58
- one-piece bodies
- 9
- smart toilets
- 7
- two-piece toilets
- 44 / 27
- models printing siphonic / washdown
- 29
- models that also offer a P-trap version
- 590–760 mm
- length span across the range
Swirl appears on 7 models and rimless on 2. White is listed on 73 of the 74; HSJ-2373M is the black body.
Bodies with the widest drain list
Models that cover the most drain settings
For a distributor serving mixed housing stock, the useful question is how many settings one model prints. These bodies print the most.
Four S-trap settingsHSJ-2332 prints 4 / 8 / 12 / 16 in plus a 180 mm P-trap, washdown flush, 640 × 370 × 685 mm. It is the only body in the range listing the 4 in setting.
8 to 16 inHSJ-2347 prints 8 / 10 / 12 / 16 in with a 180 mm P-trap and comes in siphonic or washdown builds; 700 × 380 × 700 mm.
Same span, taller bodyHSJ-2343 shares the 8 / 10 / 12 / 16 in list and the two flush builds, at 720 × 370 × 790 mm.
Rimless optionHSJ-2441 is one of the 2 rimless models; it prints 10 / 12 / 16 in and a 180 mm P-trap, in siphonic or washdown builds.
Rimless, compactHSJ-2401, the other rimless body, prints 10 / 12 / 16 in at 650 × 360 × 745 mm, with washdown or swirl builds.
Black finish, cUPCHSJ-2373M is listed in black, carries the cUPC tag and prints 10 / 12 / 16 in with washdown or swirl builds.Eight bodies, sheet values
Representative 12 in rough-in models compared
One row per body style; cells come from each model's listed specs and tags. Sizes are length × width × height.
| Body | Size (mm) | Drain settings printed | Flush | Finish | |
|---|---|---|---|---|---|
 HSJ-2531 | One-piece | 590 × 365 × 710 | S-trap 300 mm only | Swirl | White |
 HSJ-2555 | One-piece | 760 × 360 × 805 | S-trap 300 mm only | Washdown | White |
 HSJ-2494 | One-piece, cUPC tag | 730 × 390 × 690 | S-trap 300 mm only | Swirl | White |
 HSJ-2427 | One-piece | 700 × 390 × 750 | S-trap 250 / 300 / 400; P-trap 180 | Siphonic or washdown | White |
 HSJ-3004 | Two-piece | 660 × 375 × 790 | S-trap 250 / 300; P-trap 180 | Washdown | White |
 SL-8042 | Two-piece | 690 × 365 × 800 | S-trap 300 mm only | Siphonic | White |
 HSJ-V8200 | Smart, CE / cUPC / EGS tags | 730 × 390 × 575 | S-trap 305 / 400 | Not printed | White |
 E6 | Smart with bidet | 680 × 410 × 480 | S-trap 305 mm | Siphon | White |
HSJ-2531 and HSJ-2555 mark the short and long ends of the 590–760 mm span. HSJ-V8200 is also offered as HSJ-V8700 with a standard lid instead of the auto-open lid.
Who orders the 300 mm drain
Buyers who stock the 300 mm setting
The same range serves very different order profiles.
Distributors carrying one SKU per shape
Multi-setting bodies such as HSJ-2332, HSJ-2347 and HSJ-2201 let a warehouse hold one design and call off the drain setting per order. List the split by setting on the PO, since each unit is supplied for one.
Contractors on replacement jobs
Where the existing drain sits at 12 in, single-setting bodies such as HSJ-2528, HSJ-2480 and SL-8042 keep the spec sheet simple for the site team: one drain figure, one flush type.
Private-label smart toilet programs
Y1, Y2, E5 and E6 share AC 110 V, 60 Hz power, IPX4 protection, instant heating and a printed 4.8 L / 1.28 gpf, with an MOQ of 20 pcs per model. Feature packages differ: E6 adds a radar sensor and foot-sensing flip, E5 offers an optional built-in toilet cleaner. Logo and packaging work runs through our OEM/ODM service.
Order-line checklist for 12 in stock
Writing a 12 inch rough in toilet RFQ that quotes cleanly
Pricing is quoted per order with an MOQ per model, and written replies come within 12 business hours. Send these details to avoid a second round of questions.
Model and drain setting per line
Write the model, then S-trap 300 mm (or 305 mm for the smart bodies). For multi-setting bodies, give quantities per setting rather than one combined total.
P-trap lines kept separate
If part of the order needs the 180 mm P-trap version, list it as its own line so packing and labels match.
Flush build named
Where a model offers siphonic, washdown or swirl builds, state which one. Do not leave it open.
Finish and lid options
Confirm white or, for HSJ-2373M, black. For HSJ-V8200 / HSJ-V8700, choose auto-open or standard lid; for Y-series and E-series, list the optional bubble or voice control features you want.
Market marks and branding
Say which marks your market requires and check them against each model's tags, then note any logo, carton or manual changes for an OEM review at /pages/oem-odm-service.
Before choosing a 12 inch rough in toilet, measure from the finished wall surface to the center of the closet bolts or flange. A reading near 12 in, about 300 or 305 mm, matches every model in this collection. The S-trap outlet sends waste straight down into the floor drain, which is the usual layout for floor-standing installations. If the measurement falls between settings, view the drawing for clearance behind the tank before ordering for the bathroom.
The 74 models split into 58 one-piece bodies, 7 two-piece bodies and 9 smart toilets. One-piece designs offer the widest choice of shapes and size options, while two-piece models separate tank and bowl for shipping and handling. Smart bodies add electronic functions, and 7 models across the collection list a bidet function. Lengths from 590 to 760 mm cover a compact powder room as well as a larger bathroom in hotel, residential and commercial work.
A model that prints several rough-ins can simplify stock for distributors serving mixed housing. In this collection, 26 of the 12 in models also list 10 in, 14 list 16 in and 4 list 8 in, with one model at 4 in. Twenty-nine models also offer a P-trap version for wall drains. Name the exact setting and size on each order line, since every unit is supplied for one rough-in, not all of them, and the complete specification follows that choice.