

26 Inch Siphonic One-Piece Toilet, 10/12/16 Inch Rough-In
HSJ-2424 is a 26 inch one-piece toilet in white ceramic for hotel and multi-unit schedules, offered in siphonic or washdown flush versions. The version is confirmed at quotation. S-trap rough-in options are 250 mm (10 in), 300 mm (12 in) and 400 mm (16 in), and a 180 mm P-trap outlet is also listed. The catalog prints one size for the model: 670 × 355 × 785 mm (26.4 × 14.0 × 30.9 in). Floors with mixed drain positions can stay on one model number.
Compare siphonic and washdown models 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-2555Washdown One-Piece Toilet, 12 Inch Rough-In29.9" × 14.2" × 31.7"Floor-mounted, S-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-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-2424
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Printed Differences
26 Inch Siphonic One Piece Toilet, 10/12/16 Inch Rough-In Compared With HSJ-1180
HSJ-1180 is the nearest model in the range to HSJ-2424.
Certification documents for HSJ-2424 are matched to the destination market at quotation.
- HSJ-2424
- 670 × 355 × 785 mm
- HSJ-1180
- 670 × 360 × 800 mm
Flush lists differ: HSJ-2424 prints siphonic or washdown, while HSJ-1180 prints washdown.
Outlet Entries
Rough-In Versions Printed for HSJ-2424
- S-trap rough-in (10 in)
- 250 mm
- S-trap rough-in (12 in)
- 300 mm
- S-trap rough-in (16 in)
- 400 mm
- P-trap outlet height
- 180 mm
Send these with the HSJ-2424 inquiry
- Model: HSJ-2424
- Flush version: siphonic or washdown
- Outlet: S-trap rough-in (250, 300 or 400 mm) or 180 mm P-trap
- Units per rough-in
- Selling region / destination market
- Project name and room count per phase
The P-trap figure is the listed rear-outlet height, not a rough-in distance.
Listed Measurements
HSJ-2424 Length, Width and Height
- Overall size (L × W × H)
- 670 × 355 × 785 mm (26.4 × 14.0 × 30.9 in)
- Length
- 670 mm (26.4 in)
- Height
- 785 mm (30.9 in)
Millimeter values are as printed; inch values follow in brackets.
Body & Color
One-Piece Construction in White
Siphonic Version
Listed flush version for this model.
Washdown Version
Alternative listed version; the choice is confirmed at quotation.

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 does HSJ-2424 compare with HSJ-1180?+
Is HSJ-2424 a 26 inch siphonic one-piece toilet, 10/12/16 inch rough-in?+
What width does HSJ-2424 need?+
HSJ-2424 is a 26 inch siphonic one piece toilet, 10/12/16 inch rough-in options set against a washdown sibling. On size, HSJ-1180 prints 670 × 360 × 800 mm; HSJ-2424 prints 670 × 355 × 785 mm. On flush, HSJ-1180 prints washdown; HSJ-2424 prints siphonic or washdown. On S-trap, HSJ-1180 prints 250 mm; HSJ-2424 prints 250, 300 and 400 mm. Both list a 180 mm P-trap. Confirm against the model spec sheet for whichever version is chosen.
Siphonic and washdown are both listed for HSJ-2424, and the version is confirmed at quotation. A project standard sets one version for every line, while a mixed specification splits lines by room type. The white ceramic one piece toilet design applies to both. Write the flush version next to rough-in and toilet count so the quotation and the delivery match the bathroom schedule room for room. One printed size, 670 × 355 × 785 mm, applies to both versions.
Rooms where the waste leaves through the wall take the HSJ-2424 P-trap entry, printed at 180 mm. Floor mounted placement applies, with the outlet at the back. That entry pairs with either flush version. A survey marking each bathroom S or P, plus the floor-drain reading, gives every line the data it needs. Request written confirmation from the factory of the outlet split before production starts. White ceramic stays the same on every line.
Height on HSJ-2424 is 785 mm (30.9 in), and length is 670 mm (26.4 in). Width of 355 mm (14.0 in) completes the printed size of 670 × 355 × 785 mm, length × width × height. Siphonic and washdown versions share this size. Verify against the official technical drawing before fabrication of tiled ledges, boxing or vanity units around the toilet. The 26 inch label rounds the 26.4 in length, so plan from the millimeter values.
















































