Darshan S West Windsor , NJ April 03, 2015 Appliance: Whirlpool Microwave Oven/Hood Combo GH7155XHS1 Whirlpool Microwave Gh7155xhs1: Filters were dirty. How to replace Grease Range Hood Microwave Filter 5-1/16" X 7-5/8" X 3/32". Filters for the hood under the microwave were dirty - ordered these perfectly fitting parts and replaced in under 5 minutes! Grease filters can be replaced without any tools - just pulled out the old ones and slide in the new ones. Charcoal filter required to unscrew two screws on the top of the grill. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes