12 Inch Rough-In Toilets

The 12 inch rough in toilet fits the most common floor-drain layout in North American homes: 12 in, about 300 or 305 mm, measured from the finished wall to the center of the drain. All 74 models here list that S-trap setting. One-piece bodies dominate at 58 models, joined by 9 smart toilets and 7 two-piece toilets. Many bodies print more than one rough-in, which helps when a single model must cover mixed sites: 10 in is also listed on 26 models, 16 in on 14, 8 in on 4 and 4 in on 1. A P-trap version is listed on 29 models as well. Siphonic flushing is printed on 44 models and washdown on 27, with swirl on 7 and rimless on 2. Seven models include a bidet function. Lengths run from 590 to 760 mm, and white is listed on 73 models.

Service
OEM / ODM · free mold from 300 pcs
MOQ
1×20ft container · any mix
Lead time
30–45 days after sample
74 products

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    Factory documentation

    Certification scope depends on the selected model and destination market. Request model-specific documents with your quotation.

    IAPMO cUPC certificate
    ISO 9001 quality management certificate
    WRAS approved product certificate
    IAPMO certificate of listing
    UDEM CE technical inspection certificate

    FAQs

    Is 12 inch rough-in standard for toilets?

    Rough-in is the distance from the finished wall, not the baseboard, to the center of the floor drain. A 12 in rough-in, roughly 300 or 305 mm, is the most common setting for floor-drain toilets in North American homes, which is why it anchors this collection. Measure it before ordering; if the reading is closer to 10 in, a 12 in model will not fit the space.

    Which toilet types are offered with a 12 inch rough-in?

    One-piece toilets lead with 58 of the 74 models, giving most buyers a skirted or compact body to choose from. Smart toilets add 9 models and two-piece toilets 7. Each body type gives its own length and flushing, so view the drawings side by side. Buyers interested in more one-piece bodies across every rough-in can browse the one-piece toilet collection.

    Will a 10 inch rough-in toilet fit a 12 inch rough-in?

    Usually it will: a 10 in model on a 12 in drain sits about 2 in further from the wall, leaving a gap behind the tank. The reverse does not work, since a 12 in body needs at least 12 in of room. The same logic applies when an older 14 in setting is replaced with a new toilet at 12 in. If the site measures closer to 10 in, start with the 10 inch rough-in range.

    What rough-in sizes do toilets come in?

    Across this collection, the printed settings are 12 in on all 74 models, 10 in on 26, 16 in on 14, 8 in on 4 and 4 in on 1. Many bodies print more than one size, which helps distributors serving mixed housing, but each unit is supplied for one setting. A P-trap version is also offered on 29 models for wall drains. View the drawing on the product page to confirm the outlet before the order is placed.

    How are MOQ, lead time and OEM handled?

    These are quoted per model. A container of 12 in models often mixes one-piece, two-piece and smart bodies, and each line can carry its own figures depending on color, carton marking and destination. OEM and ODM supply is available with your brand on the product, carton and inserts; state the rough-in for each line and the destination market, since certification marks vary by model. Written replies go out within 12 business hours.

    How do I choose between siphonic and washdown models?

    Both flushing types are printed on 12 in models: siphonic on 44 and washdown on 27. Swirl appears on 7 and rimless on 2. The flushing version is fixed per model, so pick it alongside the body type and length, which ranges from 590 to 760 mm. A few things to learn from each product page before ordering: the flush version, the outlet and the exact body size.