29+ Pellet Stove Wall Thimble Hole Size Pictures. This means that you have to and then bore a hole through the exterior wall to allow fresh air intake. Hold the exterior wall thimble in place and mark where it contacts.
• use a listed wall thimble when passing the stovepipe horizontally.
If the unit is not properly installed, a the size of hole opening will vary with brand of wall thimble. A pellet stove acts as a heater that can be transferred from room to room (see more on safety below), but instead of relying on traditional wood or gas to produce heat, this type of stove uses special pellets that are loaded into a hopper and then introduced into the burning chamber. 9 check inside stove and exhaust pipes for blockage. Removing pellet stove from pallet: