Selkirk 187706 Wall Thimble, 6" Professional Cotton rope designed for the

Cotton rope designed for the active chewer

Temperature rating: 70 degree F

Manually operated

Contains ultraviolet radiation absorbers for the ultimate exterior protection for wood exposed to direct sunlight and harsh extremes of weather

Clear Wood Finish contains a highly-effective mildewcide to inhibit the growth of mildew on the stained/sealed surface

Selkirk 187706 Wall Thimble, 6" Professional Cotton rope designed for theHighlights: Size: 6" Type "B" gas vent Adjusts from 4 1 8" to 7"L Used to ensure clearance to combustibles is maintained For approved gas appliances Wall thimble also serves as a firestop Use in single and multi story buildings in accordance with NFPA 54 & 211