Description
Product Overview
The Lancaster PreVent-It Bathroom Soffit Vent is engineered to redirect moist bathroom air away from your home’s soffit, preventing potential water damage and roof issues. Constructed from high-quality, durable resin plastic that withstands outdoor conditions, this vent features a patented design proven to displace over 95% of exhausted air. It includes a built-in damper for a closed system that blocks pests and incoming air. With dimensions of 11.25″D x 7.85″W x 3.75″H and an air flow capacity of 110 CFM, it is compatible with standard 4-inch vent hoses and comes with four screws for straightforward installation.

Usage
This soffit vent is ideal for bathroom exhaust systems in residential homes, particularly in areas prone to moisture buildup like bathrooms and laundry rooms. Homeowners and DIY enthusiasts can use it to enhance ventilation, reduce humidity, and protect their property from mold and structural damage. It is designed for outdoor installation and works with bath fans up to 110 CFM, making it suitable for both new constructions and renovation projects.
Why Choose Us
Lancaster Home Products stands out with its Made in USA quality and scientifically tested design that outperforms standard vents. The PreVent-It model is the only soffit vent built to direct air away from the soffit, not underneath it, ensuring long-term home wellness. Its weather-resistant materials and easy-to-clean removable screen provide durability and low maintenance, backed by positive customer reviews and a high best-seller rank in home improvement categories.
Key Features
- Patented design directs moist air away from the soffit to prevent roof and water damage
- Built-in damper creates a closed system that blocks pests and unwanted air entry
- Durable resin plastic construction is weather resistant for outdoor use
- Easy installation with included screws and compatibility with 4-inch vent hoses
- Removable screen for simple cleaning and maintenance over time
FAQ
What is the maximum CFM this vent supports?
It is designed for bath fans up to 110 CFM, ensuring efficient ventilation without overloading the system.
Can I install it myself?
Yes, the vent comes with four screws and is easy to install for most DIY projects, requiring basic tools.
Is it suitable for all weather conditions?
Absolutely, the resin plastic is weather resistant, making it durable for outdoor use in various climates.
How does it prevent pests?
The built-in damper/flap seals the system when not in use, stopping insects and debris from entering.
Where is it manufactured?
This product is proudly made in the USA, ensuring high quality and supporting local manufacturing.





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