Engineered to ensure a proper fit on one- and two-piece toilets, this Brevia seat complements a wide variety of elongated toilet designs. Sturdy plastic construction resists staining, chipping, and fading, while the ergonomically contoured seat enhances comfort. This seat features innovative technology that simplifies both cleaning and installation. Elongated closed-front seat. Grip-Tight bumpers hold seat firmly in place. Quick-Release hinges allow seat to be unlatched from toilet for easy removal and convenient cleaning; no tools required. Color-matched plastic hinges. Contoured seat for user comfort. For residential use only. For non-residential application, use K-20112, K-20110, or K-7671. Toilet seats are not returnable to Kohler Co. if opened or outside of original packaging. Quick-Attach hardware for fast and secure installation. Plastic.