Plastic Soffit Vents
A Cost-Effective Solution for Improved Airflow
Plastic soffit vents are essential components of a building’s ventilation system, allowing fresh air to flow into the attic and circulate throughout the space. These vents are typically installed under the eaves of a building.Â
FAMCO plastic soffit vents are available in high-density plastics. We offer multiple styles to suit both residential and commercial ventilation needs.
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Plastic Soffit Vents
Round Soffit / Under Eave Vent – Plastic – 4inch
$17.95 Select options This product has multiple variants. The options may be chosen on the product pageRated 4.84 out of 5 -
Plastic Soffit Vents
Round Soffit / Under Eave Vent – Plastic – 6 inch
$18.95 Select options This product has multiple variants. The options may be chosen on the product pageRated 4.88 out of 5
Technical Information
FAMCO Plastic Soffit Vents Benefits



Residential Use:
Essential for bathroom and dryer venting applications, where proper exhaust ventilation is critical. Available in sizes of 4 or 6 inches to fit various pipe connections.
Commercial Use:
Designed for general attic ventilation, circulating fresh air, and preventing heat or moisture damage.
Round Soffit/Under Eave Vent (Plastic – 4 inch):
Crafted with a paintable ABS plastic fascia that features UV protection for durability. The fascia is rotatable after installation and includes an integrated screen to prevent pest entry. The polypropylene tube ensures superior weather resistance, enhancing the vent’s longevity.
Round Soffit/Under Eave Vent (Plastic – 6 inch):
Designed for piped exhaust applications, typically used in bathroom fan exhaust ventilation. The vent features fixed louvers and a short pipe extension that fits inside a 6-inch pipe. It also includes a ¼ inch plastic molded screen for pest protection.
Proper Placement:
Soffit vents are installed underneath the eaves of a roof, along the soffit.
Vent Selection:
Choose vents based on specific ventilation needs.Â
Professional Installation:
While some vents may be installed by homeowners, professional installation is recommended for complex systems or areas with challenging access.
Frequently Asked Questions
Plastic soffit vents are often used as exhaust vents when there is no other option for roof or wall ventilation. This airflow prevents issues like mold growth, heat buildup, and condensation, which can damage the structure over time.Â
When choosing a plastic soffit vent, make sure it fits the required pipe size, typically 4-inch or 6-inch. Look for a vent that provides adequate airflow and maintains a balanced intake and exhaust system for optimal ventilation. Opt for durable materials, such as HDPE, for longevity and resistance to the elements.Â
Our one-year warranty for plastic soffit vents offers coverage for manufacturing defects. If you experience any issues or defects with your plastic soffit vents, get in touch with our customer support team for assistance.