Product review (4 stars): Does Its Job Well
For those using your Whirlpool range hood ventless, this is a significant upgrade over the standard filter which only extracts grease. It fits my model uxt5230bfs range hood perfectly. I tried it out last night, cooking a steak. While it didn't eliminate 100% of the smoke, it probably removed 95% of it. There was only a slight remainder in the air, and that dissipated soon after cooking was over. The range hood and this charcoal filter were being used for the first time.

With my older hood and the grease only filter, my kitchen would be filled cloudiness and odor, prompting me to open the screen door. Sometimes the fire alarm would go off. So, again, a big improvement.

Better installation instructions would be helpful. Whirlpool customer service was not able to help. Being my first usage, I didn't want to damage pulling the yet to be used standard grease filter out. Someone at Home Depot finally helped me out.

By the way, these charcoal filters will need to be replaced every 6 months, hence the coming in pairs.