---
product_id: 615863323
title: "PreVent-It 4 Inch Soffit Vent for Bathroom Exhaust Fans, Black, 1-Pack"
brand: "lancaster home products"
price: "$125.33"
currency: USD
in_stock: true
category: "Lancaster Home Products"
url: https://www.desertcart.us/products/615863323-prevent-it-4-inch-soffit-vent-for-bathroom-exhaust-fans
store_origin: US
region: United States of America
---

# 95%+ exhaust air redirection Easy screw-mount installation Damper blocks pests & drafts PreVent-It 4 Inch Soffit Vent for Bathroom Exhaust Fans, Black, 1-Pack

**Brand:** lancaster home products
**Price:** $125.33
**Availability:** ✅ In Stock

## Summary

> 💨 Keep your home fresh and dry with the vent that’s smarter than the rest!

## Quick Answers

- **What is this?** PreVent-It 4 Inch Soffit Vent for Bathroom Exhaust Fans, Black, 1-Pack by lancaster home products
- **How much does it cost?** $125.33 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/615863323-prevent-it-4-inch-soffit-vent-for-bathroom-exhaust-fans)

## Best For

- lancaster home products enthusiasts

## Why This Product

- Trusted lancaster home products brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Pest & Draft Barrier:** Built-in damper and grille design keep bugs and cold drafts out, maintaining a clean, comfortable indoor environment.
- • **Patented Moisture Defense:** Only soffit vent that directs moist air away from soffit, preventing water damage and costly HVAC inefficiencies.
- • **Quick & Hassle-Free Setup:** Includes screws and fits standard 4-inch ducts for a seamless, tool-friendly installation experience.
- • **Durable Weather-Resistant Build:** Crafted from resilient resin plastic, designed to withstand harsh weather while proudly made in the USA.
- • **Scientifically Proven Efficiency:** Channels over 95% of bathroom exhaust air outside, safeguarding your home’s air quality and structural health.

## Overview

The PreVent-It 4 Inch Soffit Vent is a patented, high-performance bathroom exhaust vent designed to redirect over 95% of moist air away from your home’s soffit. Featuring a built-in damper to block pests and drafts, it fits standard 4-inch ducts and installs easily with included screws. Made from durable, weather-resistant resin plastic and proudly manufactured in the USA, it protects your home from moisture damage, improves indoor air quality, and reduces HVAC costs.

## Description

Buy PreVent-It 4 Inch Soffit Vent for Bathroom Exhaust Fans, Black, 1-Pack | Only under eave vent that prevents moist air re-entry; easy to install; damper keeps pests and drafts out; Made in USA: Soffit Vents - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

## Features

- Patented Design Better Protects Your Home: Only soffit vent built to direct moist bathroom exhaust air away from the soffit, not under it. This prevents several issues, including water and roof damage, increased moisture resulting in higher heating and air conditioning costs, and indoor air quality issues that can impact health.
- Scientifically Proven Performance: Directs 95%+ of exhausted air away from the home, ensuring maximum effectiveness in moisture removal and better protecting your family's wellness and home health compared to less effective, cheap soffit vents.
- No Bugs or Backdrafts: Damper helps prevent pests and outside air from entering the home, while the small front grille openings increase air speed to direct moisture past the soffit edge. Note: For bathroom exhaust fans up to 110 CFM only; do not use for dryer venting. Higher-CFM fans may experience increased noise and restricted airflow.
- Easy Installation and Maintenance: Simple to install and easy to clean via removable screen; fits a 4-inch vent hose and comes with 4 screws for secure mounting.
- Durable Weather-Resistant Construction: Made from durable resin plastic that withstands various weather conditions; Proudly made in the USA.
- Compatibility: Designed specifically for bathroom exhaust fans up to 110 CFM using 4 inch ductwork, ensuring proper airflow and ventilation performance.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CWS6FJ1C |
| Air Flow Capacity | 110 cfm |
| Best Sellers Rank | #25,015 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #7 in Soffit Vents |
| Blade Material | Plastic |
| Brand | Lancaster Home Products |
| Brand Name | Lancaster Home Products |
| Collection Name | Ventilation Fans |
| Color | Black |
| Control Method | Touch |
| Controller Type | Touchpad Control |
| Customer Reviews | 4.6 out of 5 stars 356 Reviews |
| Electric Fan Design | Exhaust Fan |
| Electric fan design | Exhaust Fan |
| Finish Type | Unfinished |
| Form Factor | Standard Vent Shape with Patented Design |
| Included Components | 4 Screws (#8-15 x 1"), Soffit Vent |
| Indoor Outdoor Usage | Outdoor |
| Installation Type | Screw Mount |
| Item Dimensions D x W x H | 11.25"D x 7.85"W x 3.75"H |
| Item Type Name | Soffit Vent |
| Item Weight | 14.56 ounces |
| Manufacturer | Novelty Manufacturing Co. |
| Material | Plastic |
| Model Name | PreVent-It Bathroom Soffit Vent |
| Model Number | 42508.01 |
| Mounting Type | Roof Mount |
| Number of Packs | 1 |
| Number of Power Levels | 1 |
| Number of Speeds | 1 |
| Part Number | 42508.01 |
| Power Source | Undereave Vent |
| Product Dimensions | 11.25"D x 7.85"W x 3.75"H |
| Recommended Uses For Product | Exhausting Bathroom Fan, Ventilating |
| Reusability | Reusable |
| Room Type | Bathroom |
| Size | 4" Soffit Vent |
| Special Features | Built-in damper/flap provides a closed system, Easy to install & screws included, High-quality, durable resin plastic that's weather resistant, Made in USA, Patented design better ventilates bathroom exhaust |
| Style | 4" Soffit Vent |
| UPC | 269784250890 026978425089 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** Lancaster Home Products
- **Color:** Black
- **Electric fan design:** Exhaust Fan
- **Mounting Type:** Roof Mount
- **Power Source:** Undereave Vent
- **Product Dimensions:** 11.25"D x 7.85"W x 3.75"H
- **Recommended Uses For Product:** Exhausting Bathroom Fan, Ventilating
- **Room Type:** Bathroom
- **Style:** 4" Soffit Vent

## Images

![PreVent-It 4 Inch Soffit Vent for Bathroom Exhaust Fans, Black, 1-Pack - Image 1](https://m.media-amazon.com/images/I/511qrULg5rL.jpg)
![PreVent-It 4 Inch Soffit Vent for Bathroom Exhaust Fans, Black, 1-Pack - Image 2](https://m.media-amazon.com/images/I/71lSf4B9OWL.jpg)
![PreVent-It 4 Inch Soffit Vent for Bathroom Exhaust Fans, Black, 1-Pack - Image 3](https://m.media-amazon.com/images/I/51w4BpvT71L.jpg)
![PreVent-It 4 Inch Soffit Vent for Bathroom Exhaust Fans, Black, 1-Pack - Image 4](https://m.media-amazon.com/images/I/41v66ks2rEL.jpg)

## Available Options

This product comes in different **Color, Item Package Quantity** options.

## Frequently Bought Together

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-10-13*