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

Just needed one piece of styrofoam on the side to snug it up. Perfect fit on top. Never had an evap cooler that used these pads until now. These things cool the air down maybe 15 or 20 degrees when it’s in the mid 80s easy. Would buy again for sure!

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!

It fits perfect wash them first leave it on for a few hrs and drain water from cooler 3 times in a week and the smells willl go away other than that i'm happy with my master cooler

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.

Good quality. $45 cheaper than Home depot.

If you have to replace the cooler pads for the particular Mastercool that they fit, they are a perfect fit. To bad they don't include the replacement styrafoam spacers also!!

Perfect for my aerocool 4800 down flow!

I really needed these pads for my cooler. They are exactly the right size and the price was good. The package actually arrive ahead of schedule.