Rinnai 184118-S Roof Discharge Termination 18″ Vent Pipe for Gas Heaters

SKU: 184118-S

Weight	3 lbs
Dimensions	22 × 6 × 6 in

$159.82

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Quantity	Unit price	Saving
1–4	$159.82	0%
5–9	$151.83	5%
10+	$143.84	10%

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Rinnai 184118-S Roof Discharge Termination 18" Vent Pipe for Gas Heaters

Specifications & product details

REGIONS SUPPLY BUYING GUIDE

Product details & buying advice

Identify the water heater and vent system before selecting a control, accessory or vent component.

Product type	Water-heater controls and vent components
Part / SKU	184118-S

What to check before ordering

Record the full heater model and its indoor/outdoor and condensing/non-condensing configuration.
Use the model instructions to confirm the vent system, diameter and function of the replacement part.
Have a qualified installer check the complete vent route and termination.

Service reminder: A similar diameter or connector is not enough to approve mixed vent components or control models.

Have gas-system installation and service completed by qualified personnel. Use the current instructions for the exact model and the requirements that apply at the installation location.

Product help & manufacturer resources

Explore this product guide · Shop this product group · Ask Regions Supply about this part

Overview

The Rinnai 184118-S Roof Discharge Termination (18") is a high-quality OEM venting accessory designed for propane and natural gas systems. It provides a reliable and safe exhaust outlet above the roofline for Rinnai tankless water heaters and similar gas appliances. Built from durable materials, this component ensures long-term corrosion resistance and maintains proper exhaust ventilation in all weather conditions.

Key Features

Genuine Rinnai OEM roof vent termination
Provides 18-inch above-roof discharge heightEngineered for use with propane and natural gas appliancesStainless steel/aluminum design resists corrosion and rust
Easy to install with precision-fit joints for airtight ventingEnsures compliance with venting standards and Rinnai installation requirements

Applications

Rinnai Tankless Water Heater SystemsLP Gas and Natural Gas Venting Installations
Commercial and Residential Rooftop Exhaust SystemsDirect Vent Category III and IV Gas Appliances

Specifications

Brand: Rinnai
Model: 184118-S
Type: Roof Discharge Termination
Height: 18" Above Roof
Material: Stainless Steel / Aluminum
Compatible Gases: Propane (LP), Natural Gas

Condition

Brand NewWhy Choose Rinnai?

Rinnai’s venting accessories are designed with the same precision and durability as their high-efficiency tankless water heaters. Each component ensures proper exhaust flow, reduced backdraft risk, and dependable long-term performance in any propane or natural gas system.

Product details

Part / SKU	184118-S

Package includes

Rinnai 184118-S Roof Discharge Termination 18" Vent Pipe for Gas Heaters

Included components and any stated pack quantity are as described in this listing. Optional accessories shown separately are sold separately unless expressly included above.

Specifications and compatibility

Description	Roof Discharge Termination (above roof)

Compatibility & part-number help

Match the manufacturer part number and equipment model to the listing. Check connection sizes, fuel type, pressure or capacity, voltage and dimensions where applicable. A similar appearance or part number alone does not confirm compatibility.

For help, send a parts inquiry with the part number, equipment model, label photos and quantity. Manufacturer documents and item-specific information, when supplied, are in the product details above.

Shipping & availability

Availability may include our inventory and supplier sources. Listed stock does not by itself confirm immediate dispatch. Ask us to confirm a ship date before ordering for time-sensitive work.

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