BBBIDET S-trap smart toilets are designed for bathrooms where the waste outlet goes vertically through the floor. The most important selection step is matching the toilet's rough-in to the actual distance from the finished wall to the center of the floor drain.
What Is an S-Trap Smart Toilet?
An S-trap toilet discharges through the floor rather than horizontally through the wall. This layout is common in many homes, apartments and renovation projects. If your waste pipe exits through the wall instead, compare P-Trap Smart Toilets.
S-Trap Rough-In Options
BBBIDET offers selected smart toilets across several floor-outlet rough-ins, including common 250mm, 300/305mm, 350mm and 400mm sizes, with additional sizes on selected models. The M979, for example, supports 250mm, 300mm, 350mm, 400mm and 450mm configurations.
Measure before ordering with our Smart Toilet Rough-In Guide.
Compact S-Trap Smart Toilets
For bathrooms where front clearance is limited, browse Compact Smart Toilets. The K80 is only 590mm deep and is available in several S-trap rough-ins as well as a P-trap version.
Built-In Tank S-Trap Models
If building water pressure is low or inconsistent, compare Smart Toilets with Built-In Tanks and Smart Toilets for Low Water Pressure. Tank-integrated models store water for the flush cycle instead of relying only on instantaneous line pressure.
Before Ordering
- Confirm the bathroom uses a floor outlet / S-trap
- Measure the rough-in from finished wall to drain center
- Check available toilet depth and front clearance
- Confirm voltage and electrical outlet position
- Confirm water inlet position and pressure
Read P-Trap vs S-Trap if you are not sure which drainage type you have.
Wholesale & Project Supply
For bulk purchasing, visit Wholesale Smart Toilets or Smart Toilet Supplier. For OEM/ODM, visit Smart Toilet Manufacturer.
