The SoffitFlow® Soffit Vent is the smarter way to exhaust bathroom fans and protect your attic from dangerous mold and mildew. Unlike standard soffit vents that dump humid air directly under intake vents—causing recirculation and moisture buildup—SoffitFlow’s patented extended-nose design projects beyond the fascia, breaking the cycle that leads to costly callbacks and warranty claims.
Performance Engineering:
• Extended nose creates a positive pressure zone, preventing humid air from re-entering attic intake vents.
• Precision-positioned 4-inch collar works with a V-shaped tapered bottom panel to increase airflow velocity.
• Integrated gravity-assist damper operates at 50+ CFM, ensuring compatibility with standard residential bath fans.
• Engineered weep hole prevents condensation buildup, while a hinged wildlife grill allows for easy maintenance.
Built to Last:
• Constructed from high-density polyethylene (HDPE), delivering superior durability in extreme temperatures (-40°F to 150°F).
• Resistant to UV degradation, chemical exposure, and coastal humidity conditions.
• Low moisture absorption prevents swelling, warping, and damper failure over time.
Installation Benefits:
• Fits standard 4-inch ductwork for seamless integration into existing rough-ins.
• Requires only standard tools and techniques—no special training for crews.
• Includes clear installation documentation and video guides.
The Professional Advantage:
By installing SoffitFlow, you’re not just meeting code—you’re applying building science to prevent mold growth, moisture damage, and future maintenance issues. This technical expertise sets you apart, allowing you to deliver premium solutions that protect homes and reputations.
Specifications:
• Duct Size: 4 in.
• Material: High-Density Polyethylene (HDPE)
• Operating Temp: -40°F to 150°F
• CFM Rating: 50+
• Country of Manufacture: USA
soffit vent, attic mold prevention, bath fan vent, HDPE exhaust vent, extended nose soffit vent, humidity control vent, bathroom exhaust termination, prevent attic mildew, wildlife-proof soffit vent, Made in USA vent.
Prevent attic mold with SoffitFlow® — the patented 4-inch HDPE soffit vent that stops humid air recirculation. Durable, UV-resistant, and Made in USA for professional-grade performance.
