This 3" Rubber Union Coupling is used on Envirolet® Waterless Self-Contained Systems to allow for easier vent disconnection. Vent disconnection is necessary if you want to service the electrical box or move the System to a new location.
Made out of heavy duty rubber and dual stainless steel clamps to ensure a proper seal of vent connection.
Specifications: 3", black rubber with stainless steel gear clamps (Note: A 2"-3" Union Coupling is also available to connect older MS 10/2 models to 3" vent pipe. Contact us for more details.)