Stainless Steel Wall Thimble For Indoor Gas Water Heater Venting, Retractable 4.25 To 7.5 Inches, 2.36 Inch Outer Diameter, Fits Round Tankless Water Heater Vent Pipe And Air Ventilation, Durable Exhaust Support

Adjustable Stainless Steel Wall Thimble for Gas Water Heater Vent Pipes
✔️ 2.46 inch inner diameter, fits walls 4.25 to 7.5 inches thick, stainless steel

This wall thimble creates a stable passage for horizontal exhaust on indoor gas water heaters, keeping air flow safe and controlled through exterior walls.

✅ Stainless steel resists corrosion while helping vent heat away
✅ Inner diameter of 2.46 inches matches common round vent pipes
✅ Thickness adjusts from 4.25 to 7.5 inches without extra parts
✅ Polished surface and fused seams stop leaks and backflow

💡 What is a wall thimble used for in home venting setups? This part gives exhaust gases from gas water heaters a safe way out through walls. - It blocks combustion gases from flowing back indoors - Stainless steel holds strong against moisture and heat - Adjustable length matches different wall depths on the spot - Smooth welds keep air moving efficiently without leaks

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