Think Crucial Replacement for Whirlpool Dryer Lint Screen, Compatible With Part # W10120998 & # 3390721, Fits MEDB850WL, MGDZ600TW, WED9050XW, WED9150WW, WED9250WL, WED9250WW EXTREMELY DURABLE so when you install new lint trap in your Whirlpool dryer you have no more problems! Plus, you shouldn't have to buy one again! INCREASED SAFTEY because a lint filter can keep flammable material from getting inside your dryer and potentially starting a fire. INCREDIBLY STRONG because replacing your lint trap all the time is not a fun thing to do! plus it fits flawlessly and is a replica of part # MEDB850WL, # MGDZ600TW, # WED9050XW, # WED9150WW, # WED9250WL, # WED9250WW, & # WGD9750WW. VERY EASY TO INSTALL! Remove your old lint filter and put in the new one! This filter fits Whirlpool dryers. GUARANTEED SATISFACTION because of a 30 day full money bank guarantee and a trusted Think Crucial warranty. We are so confident in our products that we have no problem giving you every penny back if you're unhappy with your purchase. You won't see promises like that from big box brands!