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The SELKIRK 187703 3-Inch Wall Thimble is designed to maintain airspace clearance for gas fittings. It adjusts to fit the thickness of a wall and serves as a firestop. This wall thimble is suitable for Type B gas vents and is applicable for commercial, residential, and industrial applications.
The Selkirk 187703 wall thimble maintains airspace clearance, acts as a firestop, and adjusts to fit various wall thicknesses for gas fittings in multiple applications.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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