Toilet Seat Riser, Elongated Raised Toilet Seat Adds 3.5 inches to Toilet Height, for Assistance Bending or Sitting, 300 Pound Weight Capacity Toilet Riser

This seat sit on top of toilet no screws to assembly is needed.The seat stay in place when you get up .Easy to wash,I put it in bath tub to keep it clean.

Easy to install. Stays in place so I am not concerned when I get on and off it. Cleans nicely.

Bought this for my elderly mom who has mobility issues. It's the perfect height and easy to clean. I like the plastic material, not too hard but sturdy. It's also easy to remove. Mom says it's comfortable and it's really safe for her when using the bathroom.

It's a fairly-well designed toilet seat riser that installs under your existing seat, raising it by three inches. The mounting slots allow it to be adjusted forward or back slightly, to account for variances in the bowl size (something we're seeing more and more, as toilet manufacturers seem to increasingly stray from conventional dimensions - Kohler, I'm looking right at you). It's quite sturdy, and the 300-series stainless steel bolts and fixtures hold things together nicely, as long as you tighten them down. The butterfly nuts work most of the time, but on a few occasions we had to switch to a hex nut & steel washer due to the wings being obstructed (again, on a bizarre Kohler "designer" model toilet). On the rare occasion that the underside of the toilet, around the mounting holes, has an irregular surface - a large rubber washer with a steel fender washer often does the trick. We usually add 3/8" a steel washer, anyways, and occasionally a locking washer. The foam-rubber padding, installed on four points under the riser, also help prevent it from slipping around the surface of the commode. As other reviewers have pointed out - in some cases the inner rim of the toilet is lined up with the riser in a particular way where liquid may run down the side of the riser, and between the porcelain rim of the toilet and the riser. It doesn't happen with with every toilet (1 out of 3 in my experience), but it's been an issue with several popular brand-name toilets we've installed these on. We recommend to our clients to loosen the butterfly nuts, but don't remove them. This provides an inch-or-so gap where one can use a spray washer or steamer to clean and sanitize in between the riser and toilet, without having to remove everything. We've attempted to use adhesive rubber as a gasket seal, but it didn't help very much - liquid eventually did seep in, as the riser would still move around slightly during use. Caulking worked to some extent, but made it difficult to remove the riser if needed, if the caulking didn't fail by then (the riser still moves around during use, and contracts and expands at different rates from the toilet). Despite this problem, the Carex B306-00 Elongated riser is one of the better risers on the market, especially at this price. We've installed much-more expensive risers, and even those still had difficulty with liquid settling between the porcelain and the riser. Hinged riser designs alleviate this problem, but come with their own host of problems (installation difficulties, too much lateral movement, and breakage the most common). This riser is also far more sturdy and safe than risers that clip on top of the seat. As such, we most-often recommend this item to our physically challenged clients, who require additional height on their toilets. Despite it's problem with liquid sometimes seeping under it, it's a good quality unit that's sturdy, has very secure hookup parts, and is well-priced.

I bought this in advance of knee surgery, but having tried to attach it to my toilet I concluded that while the seat itself seems sturdy, it has some fatal design issues. - The extra-long bolts included in the package have a larger diameter than typical and were too large to pass through the mounting holes in my fairly generic Kohler toilet seat. The bolts also have very large heads, so even if I could get them through the mounting holes, they would prevent the existing bolt covers from snapping down on them. - Each bolt includes a metal washer, a plastic washer, and a metal wing nut. The instructions don't say how to use the washers, although it seems like they would need to be on the top because the holes in the seat itself through which the bolts pass are absolutely huge and the bolt heads wouldn't be able to hold down the seat without the washers. However, that leaves only the metal wing-nuts anchoring the bolt to the toilet itself at the bottom, which seems like a great way to break the porcelain of the toilet if they're screwed down tight. I suspect I could go to Home Depot and find some bolts that are the same diameter/thread size as came with my Kohler seat but are long enough to pass through this seat riser, and which would work with my existing Kohler mounting hardware. But at this point that's too much trouble. This seat is going back.

I am so glad I found this height increase toilet seat. I rent where I live and was not able to do a full porcelain toilet. This is attached to my toilet and very sturdy, and the height is exactly what I need.

In the end it worked, but what should have been a 5-minute installation turned out to be about an hour. The toilet seat assembles onto the riser and is held in place by two long bolts that replace the current toilet seat bolts. The first difficulty I encountered is that the bolt heads for the elongated bolts were so big that I couldn't close the caps that hide the bolts on the toilet seat. 10 minutes with a grinder and I was able to "modify" the bolts accordingly (see attached photo of before and after bolt heads). Next, the area at the back of the riser that the bolts go through is displaced about 10mm upward rather than lying flush on the toilet surface. This means that if you tighten the bolts, the front lifts up from the toilet. Why this was done, God only knows. I used the washers from the original installation hardware in a stack with some garden hose gaskets to create a shim stack to bridge this gap (see the photo, the gaskets compress some, so I guess the gap is 9-10mm). As a final touch, I added some double-sided tape between toilet and the riser at the front edge of the riser (you can seem some in the picture above, but in the final installation, the two pieces were replaced by a single piece about 2" wide at the front). It's rock solid now. It's pretty clear to me that whoever designed this has never installed one. Not a chance. I'm an engineer with over 30 years experience and this design could be improved significantly for little effort. It's kinda mind-boggling. Oh well, it's for my 93 year old mother who is coming over for Thanksgiving. I think it should help her immensely getting up and down. It's just a shame something should have been so simple was unnecessarily complicated.

Unlike almost all other risers, this one secures via the two seat cover screws: insuring a secure placement. It is truly an elongated seat, not a riser that fits an elongated toilet with a smaller circular hole on top. The added feature of having the toilet seat and cover on top is a big plus in both comfort and esthetics.