Introducing our 4" Stainless Steel Category II/III Adjustable Wall Thimble – an essential component for efficient and safe venting in your heating system. This set includes a versatile thimble designed to accommodate various wall thicknesses, ranging from 7" to 13". The accompanying flashing measures 10" x 10", providing a secure and weather-resistant seal.

Crafted from high-quality stainless steel, this adjustable wall thimble set ensures durability and longevity. It is UL approved, meeting the highest standards of safety and reliability. The adjustable feature allows for easy adaptation to different wall sizes, providing flexibility in installation.

With a focus on quality and functionality, our Stainless Steel Adjustable Wall Thimble Set is a reliable choice for your heating system needs. Invest in a product that not only delivers performance but also offers the peace of mind that comes with UL approval. Upgrade your venting system with this adaptable and top-notch thimble set today.