The extra-wide bariatric Big John Standard Toilet Seat is designed to be more stable than most toilet seats.
1.5" and 2.5" higher than most seats.
Supports up to 800 lb.
Fits on all standard toilets, round or elongated.
The average toilet seat is 14" wide (side to side).
Big John Toilet Seats are 19" wide and are contoured for comfort.
Provides a 75% Larger Sitting Area
On the underside, the seat has special stabilizing synthetic bumpers that grip the porcelain and keep the seat from shifting while someone is seated on or transferring to the seat.
With a weight capacity of 800 lbs. They are also stained and chemical resistant.
Requires some installation, but no more than a standard toilet seat:
Installation Guide