4RV-UAM 4IN MALE ADAPT

Used to connect B Vent to/from 1/4 inch Type B Gas Vent-Allows Selkirk B Vent to be used in conjunction with other brands of existing vent

Rugged Construction-Strong, durable galvanized steel outer pipe has internal spacing beads to assure a uniform insulating air space between pipe walls

Each end is die formed to assure uniform sizing for strong, easy to connect joints which resist wasteful handling and shipping damage

The inner aluminum pipe is attached to the outer pipe at only one end

This arrangement allows for differential expansion between the two pipes, eliminating operational noises

Snap together non-positional lock system

Limited Lifetime Warranty