Mud Dauber Screens November 28, 2007, 04:07:37 pm Yahoo Message Number: 86458Today I just bought an pair of screens by JCJ for my furnace air ducts-- model M300. Nowhere on the packing does it say you need to ever remove them--in fact it says "Install and Forget". Looking at their web site, www.mud-dauber.com it says the same thing, so I guess the lawyers at JCJ must have backed off from perceived liability worries.Carl 23 1/s TK--The Red Baron (with a bobble headed moose named Manfred)