Price range: $144.00 through $167.00
Expands to accommodate wall thicknesses from 4″ to 10 1/2″. Fully insulated for sustained insulating capacity and a seal that prevents heat loss. The 4″ X 6 5/8″ diameter requires an 8 3/4″ x 8 3/4″ opening, while the 5″ X 8″ requires a 10″ x 10″ opening.
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