26 Inch Washdown One-Piece Toilet, 10 Inch Rough-In

A 26 inch washdown one-piece toilet, 10 inch rough-in as its floor setting, is what HSJ-1180 offers on a 670 × 360 mm base. Washdown is the single flush type printed for the model, so there is no flush version to choose at order. The one-piece build joins toilet tank and bowl in white ceramic. Buyers specifying one flush type across a whole building can list this SKU without splitting lines by flush.

HSJ-1180 lists one S-trap rough-in: 250 mm (10 in), taken to the center of the floor drain. A survey should record that number room by room before the RFQ goes out. Readings at 12 inches belong to another model, since none is printed here. Floor drains that read 250 mm are the target for every S-trap line on this model. Where a project mixes 10 inch and larger drains, compare floor-drain options in the 10 inch rough-in toilet collection and keep each SKU tied to the readings it matches.

Wall-waste bathrooms take the HSJ-1180 P-trap version, printed at 180 mm. That entry carries the same model code, so the purchase order separates S-trap and P-trap units by line rather than by product. Floor mount rear discharge rooms are those where the waste stack runs inside the wall. Note the outlet type next to every room on the schedule to keep quantities accurate. Washdown flush and white ceramic stay fixed on both entries, so outlet type and unit count are the only fields that change from line to line.

Length on HSJ-1180 is printed as 670 mm (26.4 in). Body width is 360 mm (14.2 in) and overall height is 800 mm (31.5 in). These three values, read as length × width × height, are the only dimensions the catalog lists for this washdown body. Verify against the official technical drawing before fabrication of any wall panels or built-in units. The S-trap version lists a 250 mm (10 in) rough-in, and the P-trap version a 180 mm outlet.