Quote Originally Posted by NHTREEGUY View Post
Madmapler so put the vermiculite down then blanket over? Still looking for spacing between rear flue pan and arch. Is two inches a good space? Blueberryhill, I may take you up on some blanket. Don't think I ordered enough.
Fill it up with vermiculite and cover it with the blanket. Run the blanket up the sides if there is any left exposed. Keep the space to the pan close like the other guys said.