Suburban 261616 Water Heater Vent Cap – 1 Inch

The Suburban 261616 Vent Cap is an OEM exterior exhaust vent designed for select Suburban tankless / on-demand RV water heaters installed in RV sidewalls measuring approximately 0 to 1 inch thick. It provides the proper exterior termination point for the water heater’s combustion exhaust system and is an important part of a correct installation.

The 261616 is the shortest vent option in this Suburban vent-cap family and is commonly used with the Suburban IW60 Nautilus / Advantage on-demand water heater.

Models It Fits

The Suburban 261616 is commonly used with:

• Suburban IW60 Nautilus On-Demand Water Heater

• Suburban Advantage Tankless / Continuous Water Heater

• Select Suburban tankless installations requiring a vent for approximately 0"–1" RV wall thickness

Wall Thickness Fitment

Suburban uses different vent-cap lengths depending on RV sidewall thickness:

• 261616 – approximately 0" to 1" wall thickness

• 261617 – approximately 1" to 2" wall thickness

• 261618 – approximately 2" to 3" wall thickness

Choosing the correct vent length is important because the exhaust assembly must pass through the wall and terminate properly on the exterior of the RV.

What the 261616 Vent Cap Does

The 261616 provides the exterior termination point for combustion gases produced by the water heater.

It passes through the RV sidewall and forms part of the water heater’s venting system. The correct vent length helps ensure proper fitment, exhaust routing, and exterior sealing.

Signs You May Need a Replacement Vent Cap

A replacement may be needed if the existing vent is:

• Bent or damaged

• Corroded

• Missing

• Improperly sized for the RV wall

• Damaged during water heater removal

• Being replaced during a new tankless water heater installation

• Too long for a thinner RV sidewall

Estimated Install Time

Approximately 15–30 minutes, depending on access and whether the water heater or exterior panel has already been removed.

Tools Required

• Screwdriver

• Basic hand tools

• Tape measure

• Appropriate RV exterior sealant

Installation Notes

Before ordering, measure the actual thickness of the RV sidewall at the water heater opening.

The 261616 is intended for thinner walls measuring approximately 0 to 1 inch thick. If your RV has a thicker wall, use the longer corresponding vent cap.

Make sure the vent is properly installed and sealed according to Suburban installation requirements to help prevent water intrusion and ensure proper exhaust operation.

Product Specifications

Manufacturer: Suburban / Airxcel
Part Number: 261616
Part Type: Water Heater Exhaust Vent / Vent Cap
Vent Length: 1 Inch
Wall Thickness: Approximately 0"–1"
Application: Select Suburban Tankless / On-Demand RV Water Heaters
Common Model: IW60 Nautilus / Advantage Tankless

Important: The 261616 is selected by RV wall thickness. For approximately 1"–2" walls use 261617; for approximately 2"–3" walls use 261618.