Buy Now From Amazon

Product Review

  • Versatile Double-Wall Venting: Wall thimble is ideal for residential, industrial, and light commercial applications. Serves as a firestop for added versatility.
  • Ensures Proper Air Space: Provides the required 1-inch air space to combustibles when installed according to manufacturer specifications
  • Efficiency Meets Durability: Aluminum liner heats quickly, and the galvanized exterior protects against outdoor elements
  • Quick & Easy Installation: Adjusts from 4 - 1/8" to 7" to fit the thickness of your wall
  • Trusted Heritage & Safety First: For nearly a century, Selkirk has led HVAC innovation with durable, efficient, UL-tested products engineered to exceed safety standards.