Product review (4 stars): Great sturdy, well designed. However the extra 1/2" is important to note!! (Had to be modified to fit my cabinetry.)
I think every dishwasher should have one of these installed to prevent more damage than necessary WHEN a leak develops.

After the second repair involving a leak in a dishwasher, I installed a leak detector. However when the next leak occurred, the water ran under the adjacent cabinet before pooling enough to trigger the alarm.

This looked like just what I was envisioning: a pan similar to what is used under washing machines to collect water in the event of a leak.

Initial impression was that it was very well constructed - almost too well I found! Upon rolling out the dishwasher and contorting the pan into the spot, the extra 1/2" was too much for what the builder spec'ed as 24" exactly.

I noticed that the sides flare out and it has a rolled lip that protrudes a bit, so like any impatient but determined engineer/handyman/fool, I used a dremmel rotary cutter and trimmed the top flared lip from each side. It doesn't look pretty, but who will ever see it except me and the future repair person! (it is *really* sturdy ABS plastic, probably stronger than is needed compared with washing machine pans I have seen.)

So bad on me for not precisely measuring the outside dimensions of the rear wheels/ front screw feet and the interior of the cabinet opening.

Other than the fit snafu, I would recommend this!!