Viking 22087 M/W Dry Sprinkler Insulating Boot Assembly addressable 4" x 2 1/2" x

4" x 2 1/2" x 2 1/2" NST

Shipping Weight:  3

The WFD40N is a waterflow detector for installation on 4" steel pipe

pathway to the electrical source

Pipe Size:  4 inches​

Viking 22087 M/W Dry Sprinkler Insulating Boot Assembly addressable 4" x 2 1/2" xViking 22087 M W Dry Sprinkler Insulating Boot Assembly Kit Kit Includes: Rubber foam seal covered with a two piece metal ring and four (4) screws. Outside Diameter: 6 1 8" Depth: 1" Dry Sprinkler Insulating Boot Assembly is used with Viking plain barrel, adjustable standard, and recessed dry sprinklers to help seal the clearance space around the dry sprinkler barrel. When properly installed, this seal decreases the potential for leakage of air