Rinnai FOT-220 Vent Extension Kit 21–39.3″ | Direct-Vent Gas Heater Exhaust Pipe

SKU: FOT-220

Weight	6 lbs
Dimensions	18 × 14 × 8 in

$503.08

In stock — available to order.

Sold individually. Each quantity ordered is one unit. Kits are one complete kit; products sold by length use the stated length unit.

Same-item volume pricing

Quantity	Unit price	Saving
1–4	$503.08	0%
5–9	$477.93	5%
10+	$452.77	10%

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Rinnai FOT-220 Vent Extension Kit 21–39.3" | Direct-Vent Gas Heater Exhaust Pipe

Specifications & product details

Overview

🔧 Rinnai FOT-220 Direct-Vent Extension Kit – 21″ to 39.3″ Adjustable PipeThe Rinnai FOT-220 Vent Extension Kit is an OEM-approved extension system designed for Rinnai EX17 and EX22 direct-vent wall heaters. This kit extends the allowable vent length from 21 inches up to 39.3 inches, making it ideal for installations requiring additional depth or wall thickness adjustment.This high-quality extension maintains a fully sealed combustion venting pathway, ensuring safe intake and exhaust operation for both LP and Natural Gas direct-vent heaters. The kit includes both flexible metal vent tubing and a rigid extension section, giving HVAC installers maximum flexibility in the field.✔

Key Features

OEM Rinnai-certified vent extension kitAdjustable vent length from 21″–39.3″Designed for Rinnai EX17 & EX22 heatersSuitable for both LP and NG direct-vent modelsIncludes flexible and rigid vent sectionsMaintains proper sealed combustion airflowReduces installation complexity in deeper walls✔ Ideal For:Direct-vent gas heater installationsRetrofits and remodeling projectsThick-wall or masonry-wall installationsHVAC professionals & licensed gas installersThis kit ensures that your Rinnai direct-vent system operates safely and efficiently while meeting manufacturer venting requirements.

Product details

Part / SKU	FOT-220

Package includes

Rinnai FOT-220 Vent Extension Kit 21–39.3" | Direct-Vent Gas Heater Exhaust Pipe

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	21" to 39.3" vent pipe extension

Compatibility & part-number help

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