Product Overview

Complete the heater-side connection of an approved indoor exhaust system with the Pentair Sta-Rite metal flue collar. This genuine OEM component transitions a compatible heater’s 4-inch vent-body connection to an 8-inch metal vent connection for vertical, negative-pressure venting.

Designed for specified Pentair MasterTemp and Sta-Rite Max-E-Therm installations, this collar is suitable for replacing a damaged connection or assembling the vent transition required by the heater’s installation instructions. High-temperature RTV silicone sealant is included. This is a venting component, not a complete exhaust system.

Ideal For

• Pool professionals replacing a damaged flue collar on a compatible MasterTemp or Max-E-Therm heater.
• Contractors completing approved indoor heater installations requiring a 4-inch-to-8-inch metal vent transition.

Key Features

• Genuine Pentair OEM component for manufacturer-specified heater venting applications.
• Metal construction with nominal 4-inch heater-side and 8-inch vent-side connections.
• Designed for vertical, negative-pressure exhaust systems—not positive-pressure venting.
• Includes high-temperature RTV silicone sealant for the connection specified in the installation instructions.

Benefits

Replace the collar as an individual service component without purchasing an entire heater assembly. The specified connection sizes help your installer match the heater to the approved vent arrangement, while the included sealant supports Pentair’s prescribed connection method. Choosing the correct OEM collar also avoids substituting a general-purpose duct fitting.

Compatibility

For compatible Pentair MasterTemp and Sta-Rite Max-E-Therm pool and spa heaters whose installation instructions specify this collar.

Compatibility depends on more than the heater family. Vent diameter, connector construction, vertical height, horizontal distance and elbows all affect the approved configuration. Do not assume an existing 8-inch vent automatically makes this the correct collar.

Installation Guidance

Installation must be performed by a qualified pool-heater professional following the heater and vent manufacturer’s instructions and applicable codes. Proper sealing, vent support and exhaust-system sizing are essential. Incorrect installation can create a carbon monoxide hazard.

What’s Included

One metal flue collar and high-temperature RTV silicone sealant. Vent piping, additional fittings and termination components are sold separately.

Confirm Before Ordering

Match your heater’s complete model number and required collar size to its installation manual. For replacement work, have your installer inspect the remaining vent system; replacing the collar alone does not correct damaged or improperly sized venting.

Specifications

Customer Q&A

Does this fit every MasterTemp or Max-E-Therm heater installation?

No. Your installer must confirm the heater model, required vent size and exhaust configuration before selecting this collar.

Can this collar be used for horizontal, positive-pressure venting?

No. Positive-pressure systems require the appropriate manufacturer-approved vent adapter and vent piping. This collar is specified for vertical, negative-pressure systems.

Does 4" x 8" describe the overall dimensions?

No. These are the nominal connection sizes: 4 inches at the heater and 8 inches at the vent connection.

Can a homeowner replace this collar?

Replacement should be handled by a qualified pool-heater professional because the collar is part of the combustion exhaust system. The completed system must be checked before heater operation.