PelletVent is a venting system for stoves and inserts that use multi-fuels (including wood pellets, corn, cherry pits, switch grass, coffee husks, walnut shells, soybeans, wheat, sunflower hulls, rapeseed, and sugar beets) or oil fuel. The DuraVent PelletVent Wall Thimble is used as a pass through for PelletVent pipe through a wall and is adjustable to match various wall thicknesses. Compatible with only wood pellet-burning stoves, this wall thimble is durably made of stainless steel with and double-wall air-insulated design and factory sealed seams for long-lasting durability, reliability and exceptional performance.