I really like these guards except they are very rigid with little flow so the water backs up. I cut out four sections of the guard, which allowed sufficient water to flow through. This did not affect sound dampening or structure stability. Seems these guards are either to thin or to thick. I would rather have thick with a work around, which is why I like them.Reduced the noise. Stopped the splash. Just a tad too small.Bought these to replace discolored guard. The sides of these guards are lower than the old ones which allows them to sit lower in the strainer basket. Now the water drains freely rather than being trapped above the higher walls of the old guard. Very pleasedThis was so easy to install. I had it out of the package and installed in a couple minutes. So happy!Works GreatThese product is well constructed and will last a long time. The reason for the three star review is for two reasons. The first is that the design of the product will not allow water to flow through it rapidly enough not to force water to fill the bottom of the sink while the water is running. I had to snip the ends of the flaps to correct this. The second reason is the design does not allow the drain stopper to function so when you want to fill the sink with water to allow items to soak, you can't. There was no solution for this problem.The other reviews on here are right, it doesn't let the water flow out. Please upvote them if you have a moment, people should know this.I'm no expert on air pressure differentials but it appears to my simple mind that if there's no way for the air to get out of the drain the water won't swap place with it. The construction of these replacement sink guards doesn't appear to let any airflow back out, the hole is just too air tight.But for seven bucks for two I figured a little opening up of this couldn't really hurt even if it did fail. I chopped out a very small amount effectively getting rid of the super tight seal. Before is on the left, after to the right.Perfect! Water drains nicely and no splash out when the disposal is running.Wish the manufacturer would fix this. If you have two spare minutes and can successfully cut a cardboard box without a trip to the ER you got this!Product was not the dimension listedThis product is very similar to the original but it is a bit slow to drain, other than that good value for the money.