Prevent cold drafts from sneaking up through your ice fishing hole with this Catch Cover® 9" Hole Sleeve. It seals out the cold while sealing in the warmth to keep you warmer, longer. You'll notice the difference! Saves on propane, too. Designed to fit flush with your shelter floor. Easy-to-follow, molded-in 1" trim lines make it easy to cut the sleeve to the perfect height for your fish house.