Product Overview

The Pentair 77707-0076 metal flue collar connects a compatible MasterTemp or Sta-Rite Max-E-Therm pool heater to a 6-inch metal vent in an approved vertical, negative-pressure venting installation. Its 4-inch end fits the heater vent body; the 6-inch end connects to the appropriately specified vent pipe. Pentair lists this collar as a heater venting accessory, with an approximate shipping weight of 3 lb. pentair.com

Use this part when installing an approved vertical vent or replacing a damaged collar in an existing system. Heater vent sizing depends on the exact model, vent height, connector type, and layout, so confirm the installation against the heater manual before ordering.

Key Features

Genuine Pentair metal flue collar, part 77707-0076

4-inch x 6-inch connection

Intended for vertical, negative-pressure metal venting

Listed among Pentair’s MasterTemp and Max-E-Therm heater accessories

Provides the specified transition between the heater vent body and a compatible 6-inch vent system pentair.com

Specifications

Warranty & Compatibility

Check Your Vent Configuration

This collar is selected by vent design, not heater name alone. Pentair’s Max-E-Therm installation guide lists 77707-0076 for a 4-inch x 6-inch metal flue collar and provides a separate vent-sizing table. For example, its table permits a 6-inch Type B double-wall vent on certain Model 200 installations; requirements differ for larger models and other connector arrangements. A 4-inch x 8-inch collar is part 77707-0077. English

The 77707-0076 is not the adapter specified for positive-pressure Category III venting. Pentair lists separate appliance adapters for those vent systems. Have a qualified heater or venting professional verify the model, vent diameter, draft category, route, and applicable code requirements.

Customer-Facing Q&A

Q: Will this fit every MasterTemp or Max-E-Therm heater?
A: No universal fit should be assumed. Confirm that the heater’s installation instructions call for a 4-inch x 6-inch collar and that the planned 6-inch vent meets the vent-sizing requirements.

Q: Can I use it for a horizontal vent run or a positive-pressure vent system?
A: This collar is listed for vertical, negative-pressure venting. Pentair specifies other adapters for positive-pressure Category III configurations. pentair.com

Q: Is this the 4-inch x 8-inch version?
A: No. The 4-inch x 8-inch metal flue collar is 77707-0077.