The Kohler Adair K-3946-0 is a premium one-piece compact elongated toilet that combines a smaller projection with a more polished concealed-base design. Its 1.28 GPF Class Five gravity flush is intended to provide strong bulk-waste performance, and the included slow-close seat makes the package more complete out of the box. For bathrooms that need a shorter footprint without switching to a round-front bowl, it is positioned as an upscale compact solution.
What rough-in does the Adair K-3946-0 require?
The K-3946-0 is built for a standard 12-inch rough-in. Measure from the finished wall to the center of the closet bolts before ordering so the compact one-piece body aligns correctly. That is the key installation number for a floor-mounted toilet like this.
How does the Class Five flush compare with other gravity toilets?
Class Five is Kohler's gravity-flush platform focused on stronger bulk-waste removal and efficient bowl evacuation. On this model it runs at 1.28 gallons per flush, so the toilet aims to stay water efficient without feeling like a compromise flush. For many households, it is positioned as a stronger-feeling gravity option than basic entry-level designs.
Does the included seat make future replacements difficult?
No. The included slow-close seat is there for convenience and quieter everyday use, but it does not prevent you from changing seats later if you want a different feature set. As always, compatibility should be checked against the compact elongated bowl shape before buying a replacement.
What does Comfort Height mean on a compact elongated toilet?
Comfort Height means the seating position is closer to standard chair height than a traditional lower bowl. That gives many adults an easier sit-down and stand-up motion while preserving the shorter front-to-back footprint of a compact elongated design. It is a useful combination when space efficiency and everyday comfort both matter.
Is the K-3946-0 water efficient and WaterSense certified?
Yes. At 1.28 GPF, it uses less water than older 1.6 GPF and higher-volume toilets while still being intended as a full-performance residential model. Under your dataset rules, 1.28 GPF products are marked WaterSense certified. That makes the Adair a compact premium toilet with mainstream efficiency credentials.
# Kohler Adair Comfort Height One-Piece Compact Elongated Toilet **Model:** `K-3946-0` **Brand:** Kohler **Category:** Toilet > The Kohler Adair K-3946-0 is a premium one-piece compact elongated toilet that combines a smaller projection with a more polished concealed-base design. Its 1.28 GPF Class Five gravity flush is intended to provide strong bulk-waste performance, and the included slow-close seat makes the package more complete out of the box. For bathrooms that need a shorter footprint without switching to a round-front bowl, it is positioned as an upscale compact solution. ## Specifications | Attribute | Value | |---|---| | Product Type | one-piece | | Bowl Shape | compact elongated | | Gpf | 1.28 | | Flush Technology | Class Five | | Height Type | comfort-height | | Seat Height In | 17.5 | | Trip Lever | left-hand | | Trapway | concealed | | Rough In In | 12 | | Seat Included | Yes | | Seat Type | Slow-close seat | | Color Finish | White | | Water Sense Certified | Yes | | Warranty | Limited Lifetime | ## What's Included - One-piece toilet - Slow-close seat - Left-hand trip lever - Mounting hardware Source: https://www.jaspecs.com/kohler/toilet/k-3946-0-kohler-adair-comfort-height-one-piece-compact-elongated-toilet/