ADJUSTABLE RAISED TOILET SEAT: Suitable for Standard toilet height, ADA Height toilet not apply, please measure before purchasing. The safety toilet seat riser raises the toilet commode by 5 inches, white seat can be adjusted up and down 3.9 inches, fits a regular toilet seat height of MIN 12.8" - MAX 16.7", which is the gold size for toilet sitting..UNIVERSAL FIT: The raised toilet seat fits most standard or elongated toilet commode. The size can be adjusted and fixed by turning the bottom knob. Front armrest width is 17.5" and rear armrest width is 14.5" (without foam pad arms.).SAFETY AND DURABLE: Our elevated toilet seat constructed with the Thickened Aluminum Alloy Frame, supports up to 300 pounds. Soft and waterproof foam-padded arms make it safer and easier to sit or stand. Toilet seat riser with handles bring safety for seniors, pregnant, handicap when squat down and stand up..TOOL FREE INSTALLATION: Simply attaches the elevated toilet riser to commode with adjustable knobs for extra stability and safety. Easy to assemble in 10 minutes, anyone can install and understand operation..BUY WORRY-FREE: We promise that the products will be replaced free of charge due to quality problems within one year. If you encounter other problems during use, please refer to the manual After-sales email contact us.