

Rimless Washdown One-Piece Toilet, 6/10 Inch Rough-In
HSJ-2550 is a rimless one-piece toilet in white ceramic. Washdown is the single flush type listed. S-trap rough-ins of 150 mm (6 in) and 250 mm (10 in) are printed, together with a 180 mm P-trap outlet for wall drains. The body measures 675 × 370 × 750 mm (26.6 × 14.6 × 29.5 in), length × width × height. Hotel and multi-unit projects whose floor drains sit 150 mm or 250 mm from the finished wall can match them directly to a listed rough-in.
See related sizes and outlets across the one-piece toilet range.
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LJ-E06Rimless Wall-Hung Toilet, 185 mm P-Trap Outlet20.9" × 14.2" × 14.6"Wall-hung
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LJ-A18500 mm Rimless Wall-Hung Toilet, 180 mm P-Trap Outlet19.7" × 14.8" × 14.4"Wall-hung
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LJ-A15Rimless Wall-Hung Toilet, 175 mm P-Trap Outlet, 3 Finishes20.9" × 14.4" × 14.4"Wall-hung
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LJ-A13Rimless Wall-Hung Toilet, 170 mm P-Trap Outlet, 3 Finishes20.3" × 14.2" × 14.6"Wall-hung
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LJ-A12Rimless Wall-Hung Toilet, 180 mm P-Trap Outlet, 3 Finishes20.9" × 14.6" × 14.4"Wall-hung
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HSJ-3048Rimless Washdown Two-Piece Toilet HSJ-3048, 10 Inch Rough-In25.6" × 13.4" × 30.3"Floor-mounted, S-trap or P-trap
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HSJ-3047Rimless Washdown Two-Piece Toilet HSJ-3047, 10 Inch Rough-In25.6" × 13.4" × 30.3"Floor-mounted, S-trap or P-trap
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HSJ-2557Rimless Washdown One-Piece Toilet, 8/10 Inch Rough-In26.4" × 15.7" × 28.7"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
Fit data
Rough-in, flush and size of HSJ-2550
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Send the model, selected dimensions, quantity and destination. Confirm specifications, packing and documentation in your quotation.
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Body Dimensions
Printed Size of the 27 Inch Rimless Washdown One Piece Toilet, 6/10 Inch Rough-In
Catalog dimensions for HSJ-2550 read 675 × 370 × 750 mm, or 26.6 × 14.6 × 29.5 in.
- Length (26.6 in)
- 675 mm
- Width (14.6 in)
- 370 mm
- Height (29.5 in)
- 750 mm
Overall height is printed as 750 mm (29.5 in).
Length is printed at 675 mm (26.6 in) and width at 370 mm (14.6 in).
Verify against the official technical drawing before fabrication.
Color & Material
White Ceramic One-Piece Body

White
White Ceramic
Tank and bowl are joined in one-piece construction. White is the single listed color.
Certification documents for HSJ-2550 are matched to the destination market at quotation.
Mount: floor-mounted.
Bowl & Flush
Washdown Is the Printed Flush for HSJ-2550
Washdown is the one flush type printed for HSJ-2550, with a rimless bowl.
Washdown Version
Single listed flush type for HSJ-2550.
Rimless Bowl
Rimless is printed for HSJ-2550.
Washdown applies to every outlet version of HSJ-2550.
Range Neighbor
How HSJ-2550 Differs From HSJ-2373M
HSJ-2373M is the nearest model in the range to HSJ-2550.
- HSJ-2550 size
- 675 × 370 × 750 mm
- HSJ-2373M size
- 680 × 370 × 750 mm
- HSJ-2550 flush
- Washdown
- HSJ-2373M flush
- Washdown or Swirl
- HSJ-2550 S-trap
- 150 / 250 mm
- HSJ-2373M S-trap
- 250 / 300 / 400 mm
HSJ-2550 quote checklist
- Model: HSJ-2550
- Outlet: S-trap rough-in (150 or 250 mm) or 180 mm P-trap
- Quantity per outlet version
- Destination market
- Project name and room count per phase
Outlet Versions
Which HSJ-2550 Outlet to Specify
S-trap rough-in for HSJ-2550 is the distance from finished wall to outlet center: 150 mm (6 in) or 250 mm (10 in).
- S-trap rough-in
- 150 mm (6 in) / 250 mm (10 in)
- P-trap outlet height
- 180 mm
- Outlet versions
- 3
The P-trap figure is the listed rear-outlet height, not a rough-in distance.
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 27 inch rimless washdown one-piece toilet, 6/10 inch rough-in, HSJ-2550?+
Why does HSJ-2550 list a 6 inch rough-in?+
How does HSJ-2550 compare with HSJ-2373M?+
HSJ-2550 is a 27 inch rimless washdown one piece toilet with 6/10 inch rough-in versions, all printed at 750 mm (29.5 in) overall height. Length is 675 mm (26.6 in) and width is 370 mm (14.6 in), giving a printed size of 675 × 370 × 750 mm. A 180 mm P-trap outlet is also listed. Verify these figures against the official technical drawing.
On HSJ-2550 the bowl is printed as rimless, and washdown is the single flush. The one piece toilet design joins tank and bowl in white ceramic. Every line on the order therefore shares bowl type, flush and color. A building program specifying rimless bowls throughout can list this model and vary only outlet entry and count. Other one-piece bodies are grouped in the one-piece toilet range for comparison. One printed size, 675 × 370 × 750 mm, applies to every entry.
Floor drains on HSJ-2550 are matched by S-trap entries at 150 mm (6 in) and 250 mm (10 in). Wall wastes are matched by a P-trap entry at 180 mm. Every printed entry goes on a separate line with its toilet count. Readings outside these values need another model. Request written confirmation from the factory of the outlet split before production starts. White ceramic and washdown flush apply to every entry.
























