DIAL 3437 Mastercool Cooler Pad, 40" x 23" x 8"

they fit with out a side shim, I used dawn soap 4 table spoons, ran it, smell gone after 3 hours

Great Price. They are not exactly the same as the originals but I believe they are even better.

it comes in two parts that fit side by side in your swamp cooler. the directions were not thorough to me, but i watched another review which instructed me on which direction to install them. if installed backwards, the air flow is not good and thus, won't cool off effectively. they stamped directional arrows on the sides, but it was somewhat faded and hard to read. once installed, they worked well. i did not smell a weird odor when first installed and the swamper turned on....as others smelled. overall i'm satisfied!

These fit my dad's cooler perfectly, including the groove for the PVC water distribution. I used tea tree oil, as recommended by others, and the slightly fishy smell was gone within about 48 hours. Not an problem.

Our original pads were 3 large and 1 smaller had these pads for 6 years. When we received only 2 pads I got worried but these 2 pads fit our unit perfect! Second concern was regarding the smell. Yes it did stink for about 5 hours running it, expected to sleep in our Rv but by shutting down the unit for the night it was ok the next night.