3 HORIZONTAL VENT KIT
This is a plumbing/HVAC vent termination kit, typically used for high-efficiency furnaces or tankless water heaters that vent through an exterior wall.
What it is
A horizontal sidewall vent kit:
- Size: commonly 3-inch (3") vent piping
- Type: horizontal termination kit
- Used for PVC, CPVC, or stainless vent systems depending on appliance
What it does
- Allows an appliance to exhaust combustion gases safely through a side wall
- Often includes a coaxial or dual-pipe setup:
- Exhaust vent pipe
- Fresh air intake (on many high-efficiency systems)
- Protects the vent opening from:
Key features
- Designed for high-efficiency (condensing) equipment
- Includes a wall termination hood or vent cap
- Helps maintain proper:
- Air intake
- Exhaust separation
- Combustion efficiency
- Rated for outdoor exposure and weather resistance
Common applications
- High-efficiency furnaces (90%+ AFUE systems)
- Tankless water heaters
- HVAC condensing appliances
- Direct-vent gas appliances
What’s usually included
Depending on brand:
- Wall termination hood
- Elbow(s)
- Straight pipe sections
- Wall thimble or mounting plate
- Intake/exhaust fittings
