Hole Sleeves sit inside the Catch Cover ring to keep cold air and elements out of the hole. 

• Fish house stays warmer and ice holes stay ice-free. 
• Light and durable, sleeves can be trimmed in 1" increments to fit your ice house. 
• Universal fit, works with all brands of hole covers. 
• 18" Hole Sleeves are designed to fit trailers/campers that sit higher off the ground than traditional ice fishing houses.