Washdown One-Piece Toilet, 12 Inch Rough-In
HSJ-2555 is a floor-mounted one-piece toilet in white ceramic with a washdown flush. Drainage runs through an S-trap at a 300 mm (12 in) rough-in, measured from the finished wall to the outlet center. Printed size is 760 × 360 × 805 mm (29.9 × 14.2 × 31.7 in), length × width × height. Hotel and multi-unit projects with one repeated drain layout can specify a single line for every bathroom, provided each floor drain sits at 12 in.
Compare printed sizes and rough-ins across the one-piece toilet range.
More in 12 Inch Rough-In Toilets
Mix any models in one 20ft container · no per-model minimum
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SL-8042Siphonic Two-Piece Toilet, 12 Inch Rough-In27.2" × 14.4" × 31.5"Floor-mounted
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NBK-3076One-Piece Toilet, 12/16 Inch Rough-In28.3" × 16.1" × 30.3"Floor-mounted
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HSJ-V8200 / HSJ-V870029 Inch Floor-Mounted Smart Toilet, 12/16 Inch Rough-In28.7" × 15.4" × 22.6"Floor-mounted, S-trap
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HSJ-G1528 Inch Floor-Mounted Smart Toilet, 12/16 Inch Rough-In27.5" × 15.5" × 18.8"Floor-mounted, S-trap
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HSJ-300728 Inch Washdown Two-Piece Toilet, 10/12 Inch Rough-In27.6" × 15.0" × 31.1"Floor-mounted, S-trap or P-trap
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HSJ-300426 Inch Washdown Two-Piece Toilet, 10/12 Inch Rough-In26.0" × 14.8" × 31.1"Floor-mounted, S-trap or P-trap
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HSJ-253123 Inch Swirl Flush One-Piece Toilet, 12 Inch Rough-In23.2" × 14.4" × 28.0"Floor-mounted, S-trap
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HSJ-252827 Inch Swirl Flush One-Piece Toilet, 12 Inch Rough-In26.8" × 14.6" × 29.9"Floor-mounted, S-trap
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HSJ-252724 Inch Swirl Flush One-Piece Toilet, 12 Inch Rough-In24.4" × 14.6" × 29.1"Floor-mounted, S-trap
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HSJ-2499Washdown One-Piece Toilet, 10/12 Inch Rough-In, 750 × 400 × 660 mm29.5" × 15.7" × 26.0"Floor-mounted, S-trap
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HSJ-2498Washdown One-Piece Toilet, 10/12 Inch Rough-In, 680 × 375 × 810 mm26.8" × 14.8" × 31.9"Floor-mounted, S-trap or P-trap
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HSJ-2497Washdown One-Piece Toilet, 10/12 Inch Rough-In, 700 × 390 × 740 mm27.6" × 15.4" × 29.1"Floor-mounted, S-trap or P-trap
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HSJ-2496Washdown One-Piece Toilet, 10/12 Inch Rough-In, 700 × 380 × 820 mm27.6" × 15.0" × 32.3"Floor-mounted, S-trap or P-trap
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HSJ-249526 Inch Washdown One-Piece Toilet, 10/12 Inch Rough-In26.0" × 14.2" × 33.5"Floor-mounted, S-trap or P-trap
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HSJ-249429 Inch Swirl Flush One-Piece Toilet, 12 Inch Rough-In28.7" × 15.4" × 27.2"Floor-mounted, S-trap
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HSJ-2441Rimless Siphonic One-Piece Toilet, 10/12/16 Inch Rough-In27.2" × 14.6" × 30.3"Floor-mounted, S-trap or P-trap
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HSJ-2427Siphonic One-Piece Toilet, 10/12/16 Inch Rough-In, 700 × 390 × 750 mm27.6" × 15.4" × 29.5"Floor-mounted, S-trap or P-trap
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HSJ-2425Siphonic One-Piece Toilet, 10/12 Inch Rough-In26.8" × 15.7" × 29.9"Floor-mounted, S-trap or P-trap
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HSJ-242426 Inch Siphonic One-Piece Toilet, 10/12/16 Inch Rough-In26.4" × 14.0" × 30.9"Floor-mounted, S-trap or P-trap
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HSJ-240327 Inch Siphonic One-Piece Toilet, 10/12/16 Inch Rough-In27.0" × 15.2" × 32.3"Floor-mounted, S-trap or P-trap
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HSJ-2401Rimless Washdown One-Piece Toilet, 10/12/16 Inch Rough-In25.6" × 14.2" × 29.3"Floor-mounted, S-trap or P-trap
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HSJ-2390Washdown One-Piece Toilet, 10/12/16 Inch Rough-In26.4" × 14.2" × 29.9"Floor-mounted, S-trap or P-trap
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HSJ-2388Washdown One-Piece Toilet, 10/12 Inch Rough-In, 710 × 395 × 645 mm28.0" × 15.6" × 25.4"Floor-mounted, S-trap or P-trap
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HSJ-2373MBlack Washdown One-Piece Toilet, 10/12/16 Inch Rough-In26.8" × 14.6" × 29.5"Floor-mounted, S-trap or P-trap
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HSJ-236829 Inch Washdown One-Piece Toilet, 10/12 Inch Rough-In28.7" × 15.0" × 32.7"Floor-mounted, S-trap or P-trap
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HSJ-2365Washdown One-Piece Toilet, 10/12 Inch Rough-In, 720 × 390 × 750 mm28.3" × 15.4" × 29.5"Floor-mounted, S-trap or P-trap
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HSJ-2364Washdown One-Piece Toilet, 10/12 Inch Rough-In, 700 × 360 × 750 mm27.6" × 14.2" × 29.5"Floor-mounted, S-trap or P-trap
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HSJ-2362Washdown One-Piece Toilet, 10/12 Inch Rough-In, 750 × 410 × 710 mm29.5" × 16.1" × 28.0"Floor-mounted, S-trap or P-trap
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HSJ-2361Washdown One-Piece Toilet, 10/12 Inch Rough-In, 700 × 385 × 760 mm27.6" × 15.2" × 29.9"Floor-mounted, S-trap or P-trap
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HSJ-2347Siphonic One-Piece Toilet, 8/10/12/16 Inch Rough-In, 700 × 380 × 700 mm27.6" × 15.0" × 27.6"Floor-mounted, S-trap or P-trap
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HSJ-2343Siphonic One-Piece Toilet, 8/10/12/16 Inch Rough-In, 720 × 370 × 790 mm28.3" × 14.6" × 31.1"Floor-mounted, S-trap or P-trap
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HSJ-2332Washdown One-Piece Toilet, 4/8/12/16 Inch Rough-In25.2" × 14.6" × 27.0"Floor-mounted, S-trap or P-trap
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HSJ-2202Washdown One-Piece Toilet, 10/12 Inch Rough-In, 680 × 380 × 670 mm26.8" × 15.0" × 26.4"Floor-mounted, S-trap or P-trap
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HSJ-2201Siphonic One-Piece Toilet, 10/12/16 Inch Rough-In, 700 × 370 × 810 mm27.6" × 14.6" × 31.9"Floor-mounted, S-trap or P-trap
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HSJ-2480Siphonic One-Piece Toilet, 12 Inch Rough-In27.2" × 15.4" × 27.4"Floor-mounted, S-trap
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Y2Y2 Smart Bidet Toilet with Dual-User Memory and UV Sterilisation28.3" × 17.9" × 20.1"Floor-mounted, S-trap
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Y1Y1 UV-Sterilising Smart Toilet with Heated Bidet Seat and Foot-Touch Flush28.3" × 17.9" × 20.1"Floor-mounted, S-trap
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E6E6 Radar-Sensor Smart Bidet Toilet with Foot-Sensing Lid and UV Sterilisation26.8" × 16.1" × 18.9"Floor-mounted, S-trap
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E5E5 Foot-Touch Flush Smart Bidet Toilet with Heated Seat and UV Sterilisation26.8" × 15.6" × 19.1"Floor-mounted, S-trap
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964Foot-Sensing Flush Smart Bidet Toilet with Dual-User Memory, UV Sterilisation28.1" × 18.9" × 21.3"Floor-mounted, S-trap
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956Dual-User Memory Smart Bidet Toilet with UV Sterilisation and Child Seat26.8" × 16.1" × 18.3"Floor-mounted, S-trap
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945Foot-Sensing Flush Smart Bidet Toilet with UV Sterilisation and Heated Seat26.8" × 16.1" × 18.3"Floor-mounted, S-trap
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1991Siphonic One-Piece Toilet with Fully Glazed Trapway, 3-Inch Flush Valve27.8" × 15.4" × 27.6"Floor-mounted, S-trap
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1981Tornado Flush One-Piece Toilet with 3-Inch Flush Valve and Soft-Close Seat28.0" × 15.2" × 29.1"Floor-mounted, S-trap
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1978Siphon Jet One-Piece Toilet, 1.28 GPF, 12-Inch Rough-In, Fully Glazed Trapway27.2" × 14.6" × 27.6"Floor-mounted, S-trap
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1939Siphon Jet One-Piece Toilet with 3-Inch Flush Valve, Fully Glazed Trapway27.6" × 15.6" × 28.3"Floor-mounted, S-trap
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1938One-Piece Tornado Flush Toilet with 2-Inch Flush Valve, 1.28 GPF27.6" × 15.2" × 30.7"Floor-mounted, S-trap
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1916Tornado Flush One-Piece Toilet, 3-Inch Flush Valve, Fully Glazed Trapway27.6" × 15.2" × 29.5"Floor-mounted, S-trap
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1009Siphon Jet One-Piece Toilet with 3-Inch Flush Valve, 14.4-Inch Body Width27.0" × 14.4" × 28.5"Floor-mounted, S-trap
Fit data
Rough-in, flush and size of HSJ-2555
Send a spec. Get a real quote in 12 business hours.
Send the model, selected dimensions, quantity and destination. Confirm specifications, packing and documentation in your quotation.
12 consecutive years at KBIS and IBS.
Printed Dimensions
30 Inch Washdown One Piece Toilet, 12 Inch Rough-In: 760 × 360 × 805 mm Printed Size
The catalog prints one size for HSJ-2555: 760 × 360 × 805 mm.
- Overall height · 31.7 in
- 805 mm
- Length × width · 29.9 × 14.2 in
- 760 × 360 mm
HSJ-2555 prints 760 × 360 × 805 mm; HSJ-2343 prints 720 × 370 × 790 mm.
Flush lists differ: HSJ-2555 prints washdown, while HSJ-2343 prints siphonic or washdown.
Millimeter values are as printed; inch values follow in brackets.
Document Set
Certification Paperwork for HSJ-2555
Certification documents for HSJ-2555 are matched to the destination market at quotation.
Document sets follow the market named on the RFQ.
Outlet Choice
Rough-In Versions Printed for HSJ-2555
- S-trap rough-in
- 300 mm (12 in)
- Outlet versions
- one
Rough-in for HSJ-2555 is printed as a single 300 mm (12 in) S-trap.
Inputs for an HSJ-2555 price
- Model: HSJ-2555
- Outlet: S-trap rough-in (300 mm)
- Units per rough-in
- Selling region / destination market
- Project name and room count per phase
Body Build
Tank and Bowl in One Piece
Washdown Version
Single listed flush type for HSJ-2555.
White
White, Single Listed Color
Tank and bowl are joined in one-piece construction. White is the single listed color.
How we work
From enquiry to shipment
A factory-direct process built for importers, distributors and project buyers. No trading layer in between.
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01
Send the enquiry
Tell us the model, quantity, destination market and any branding or packaging requirement. A spec sheet or drawing helps but is not required to start.
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02
Our sales team contacts you
A named account manager follows up by email or WhatsApp, confirms the specification and clarifies anything missing before pricing.
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03
Quotation
You receive a written quotation with unit price, MOQ, packing details, lead time and the trade term you asked for. Entry, mid and premium build levels can be quoted side by side.
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04
Sample approval
We send a sample for finish, function and packaging sign-off. Branded samples are produced once artwork is confirmed.
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05
Production and shipment
Mass production starts after sample approval and deposit. QC and inspection run before loading, then the order ships to the agreed port.
OEM and ODM to your specification
We develop to a brief. Send a reference model, a drawing or simply the price band and market you are targeting, and we will propose what fits. Entry, mid and premium builds are all available from the same factory.
- Your logo on product, carton and documentation
- Private-label packaging and manuals
- Custom finish matched to your standard
- Custom dimensions and tooling where volume supports it
- Product development from your reference or price target
- Destination-market documentation prepared on request
FAQs
How tall is the 30 inch washdown one-piece toilet, 12 inch rough-in, HSJ-2555?+
Which drain does HSJ-2555 fit?+
How does HSJ-2555 compare with HSJ-2343?+
HSJ-2555 is a 30 inch washdown one piece toilet, 12 inch rough-in, with an 805 mm (31.7 in) overall height. Length is 760 mm (29.9 in) and width is 360 mm (14.2 in), as printed in length × width × height order. The S-trap rough-in is 300 mm. Verify these figures against the official technical drawing. The one piece body is white ceramic with a washdown flush.
Length on HSJ-2555 is 760 mm (29.9 in) and width is 360 mm (14.2 in), with an 805 mm (31.7 in) overall height. The 30 inch label rounds the 29.9 in length, with a 300 mm (12 in) S-trap rough-in printed for this washdown model. The one piece toilet design joins tank and bowl in white ceramic, floor mounted. Confirm against the model spec sheet before ordering.
Washdown flush with a 300 mm (12 in) S-trap is the one combination printed for HSJ-2555. A project whose floor drains all read 12 inches can order on a single line with the toilet count. Wall wastes and other drain distances need another model. Survey every bathroom first and keep the readings on file. Request written confirmation of the quantity from the factory before production. Width of 360 mm and height of 805 mm complete the printed size.