Zinsser B-I-N White Water-Based Stain and Odor Blocking Primer 1 qt 3-30-301-01 It fits over the wall

It fits over the wall thimble face plate and comes with an insulation ring to reduce air infiltration where the pipe slips through the thimble

the unit provides 1/2 in

Brush on a second thin coat following directions above

Grade 43 chain better know as "High Test Chain" is made from a higher strength carbon steel and provide higher strength to weight ratio than Grade 30 chain as well as an increased resistance to wear

UL approved 4

Zinsser B-I-N White Water-Based Stain and Odor Blocking Primer 1 qt 3-30-301-01 It fits over the wallZinsser B I N Water Base Primer is a primer sealer stain killer bond coat recommended for application to interior ceilings, walls, doors, trim, cabinets, furniture, and related paintable surfaces. This primer offers a permanent solution to severe stains and odors in a fast drying formula that works with any topcoat. It may be used to block water, grease, rust, smoke, asphalt, graffiti, and many other types of stains.