

Compact Slipper Soaking Tub, Freestanding, 29.5 in Tall, 51 & 55 in

SANIKB D-8331 is a compact, single-slipper freestanding soaking tub in gloss white acrylic, sized for small bathrooms. It comes in D-8331-130 at 1300 × 800 × 750 mm (51 × 31.5 × 29.5 in) and D-8331-140 at 1400 × 800 × 750 mm (55 × 31.5 × 29.5 in). The rim rises from 650 mm at the drain end to 750 mm at the backrest, and the drawing shows inner depths of 505 to 520 mm (19.9 to 20.5 in). There are no tap holes in the rim; the tub takes a floor-standing or wall-mounted filler.
D-8331 carries cUPC certification, and each quote request is answered within 12 business hours. See more short-length models in the small bathtubs collection.
More in Small Bathtubs
MOQ per model · one 40HQ container, quantity set by tub size
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D-8138Round Freestanding Tub with Deck-Mount Faucet Ledge, 54 in Diameter54" × 54.3" × 22.8"Freestanding
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D-8028Round Cylinder Freestanding Tub on Recessed Plinth, 55 in Diameter55" × 55.1" × 23.6"Freestanding
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FT060–FT065Hammock-Style Slipper Freestanding Tub, Six Sizes, 51-70 in51" / 55" / 59" / 62" / 67" / 70" × 29.9" / 31.5" / 33.5" × 25.2" / 26.8" / 27.6" / 30.3"Freestanding
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FT013/FT014/FT023/FT024Black Rectangular Freestanding Tub, White Interior, 55-71 in55" / 59" / 67" / 71" × 29.5" / 31.5" × 23.2"Freestanding
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D-8330Compact Rounded-Rectangle Deep Soaking Tub, 27.6 in High, 51 & 55 in51" / 55" × 31.5" × 27.6"Freestanding
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D-8202Compact Deep Soaking Freestanding Tub on Plinth Base, 47 & 51 in47" / 51" × 29.5" × 27.6"Freestanding
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D-8028QCompact Round Drop-In Bathtub, 55 in Diameter55" × 55.1" × 19.3"Drop-in (deck or platform)
Tub sheet
Size and installation of D-8331
Every option below is a produced configuration with its own SKU. 2 sizes. Name the exact SKU on each purchase order line.
Order codes
| SKU | Size |
|---|---|
| D-8331-130 | 51" x 31" |
| D-8331-140 | 55" x 31" |
Mixed-configuration orders are accepted within one purchase order. Confirm the SKU, finish and size on the quotation before sample approval. Request the full configuration list.
Compare · 2 sizes
Size & spec comparison
| 51" x 31"D-8331-130 | 55" x 31"D-8331-140 | |
|---|---|---|
| Overall L×W×D | 51″ × 31.5″ × 29.5″ 1300 × 800 × 750 mm | 55″ × 31.5″ × 29.5″ 1400 × 800 × 750 mm |
Common specs above apply to every size; the table compares only what changes by size. Custom sizes available for OEM/ODM.
Send a spec. Get a real quote in 12 business hours.
Engineer-reviewed. cUPC · CE · ISO 9001 ready. 30–45 day lead time, FOB or CIF.
12 consecutive years at KBIS and IBS.
Standard on every shipment.
Profile & Depth
Short plan, tall backrest, deep well
D-8331 keeps the length to 1300 or 1400 mm and adds height instead. The rim slopes from 750 mm at the backrest end to 650 mm at the drain end.
505 to 520 mm inside
The drawing gives an inner depth of 505 mm (19.9 in) at the high end and 520 mm (20.5 in) at the drain end, for upright soaking in a short tub.
Egg plan, drain at the narrow end
The outline tapers from a wide end to a narrower one with no flat side. The drain is at the narrow end, under the lower part of the rim.
Longer slipper profiles are in the SANIKB slipper tub range.
Fit & Sizes
51 in or 55 in long, 800 mm wide
Each compact size is 800 mm (31.5 in) across, with the backrest end standing 750 mm (29.5 in) tall. The lengths are 1300 mm and 1400 mm.
- D-8331-130
- 51" × 31.5" × 29.5" (1300 × 800 × 750 mm)
- D-8331-140
- 55" × 31.5" × 29.5" (1400 × 800 × 750 mm)
- Installation
- Freestanding, flat to floor
- Faucet Mounting
- No tap holes; floor-standing or wall-mounted filler
The lowest point of the rim is 650 mm (25.6 in), at the drain end. Check that step-over height with the end user, particularly for hotel rooms.
For either the 1300 mm or 1400 mm size, read the drain position off the approved drawing.
Construction & Finish
Compact shell in gloss white acrylic
A gloss white pure acrylic sheet is used for both compact sizes, trimmed with a slim rim.

White
Same finish in both lengths
The 51 in and 55 in sizes are both made in gloss white, which keeps a mixed order of compact rooms consistent.
The 750 mm backrest is the highest edge of the shell. Ask how that end is padded and which way up the cartons travel.
Write the damage inspection and replacement process into the order terms before shipment.
Note any marks on the gloss surface on the delivery paperwork before it is signed.
Compliance
cUPC certification for D-8331
A single document set naming both compact sizes, D-8331-130 and D-8331-140, covers either choice.
D-8331 is cUPC certified. Request the current certificate number and validity for D-8331-130 and D-8331-140 early, so the approval file is not held up.
Add the destination market to the inquiry and the paperwork follows it. Written answers are issued within 12 business hours.
Procurement
Ordering D-8331
Both compact sizes are quoted separately, each with a lead time of 30-45 days after sample approval.
- Standard Lead Time
- 30-45 days after sample approval
- Quote Reply
- within 12 business hours
Where one bathroom layout repeats across many units, confirm the drain end and faucet position on the sample and apply it to every unit.
Include these details with the RFQ
- Quantities for D-8331-130 and D-8331-140
- Floor or wall faucet position
- Drain and overflow finish
- Destination market and port
- Carton labeling
- Shipping window
Treat this lead time as indicative until the quotation is confirmed.
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







