Photo 1 of Mineye 3.15'' Stainless Steel Vent Wall Thimble for Gas Tankless Water Heater, Double Wall Thimble Pipe Ventilation Design, Retractable Length from 4.7" to 7.8"

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Photo 1 of Mineye 3.15'' Stainless Steel Vent Wall Thimble for Gas Tankless Water Heater, Double Wall Thimble Pipe Ventilation Design, Retractable Length from 4.7" to 7.8"Photo 2 of Mineye 3.15'' Stainless Steel Vent Wall Thimble for Gas Tankless Water Heater, Double Wall Thimble Pipe Ventilation Design, Retractable Length from 4.7" to 7.8"