Lonffery Trailer & RV Sidewall Exhaust Vent Kit, 2-Pack — 3" Mount, Durable UV-Resistant Plastic

Lonffery's 2-pack Trailer & RV Sidewall Exhaust Vent Fan Kit is a heavy-duty, easy-to-install side vent solution that improves airflow and prevents stale air buildup inside trailers, RVs, campers, and work trucks.

If you carry gear, cargo, or pets in an enclosed vehicle, stagnant air, odors, and excess heat become nuisance problems. These sidewall exhaust vents mount directly into a 3" hole in the side panel and create consistent passive ventilation without tapping into your roofline. Made from impact-resistant plastic and sized to fit a broad range of recreational and utility vehicles, the kit offers a straightforward upgrade that resists sun, road vibration, and weather exposure.

How will this vent kit improve airflow in my trailer or RV?

The Lonffery side vents allow cross-ventilation by letting trapped air escape through the sidewall, encouraging fresh air to enter through other openings. They work as passive exhaust ports—no wiring or fans required—so airflow continues whenever there is movement or temperature differences inside versus outside.

• Creates a low-profile exhaust pathway to reduce odor and moisture buildup
• Encourages passive air exchange during travel and while parked
• Reduces heat accumulation inside cargo or living areas

Will these vents withstand outdoor conditions and road use?

The vents are molded from premium heavy-duty plastic engineered for long-term outdoor exposure. They resist UV degradation, road vibration, and typical weather extremes so they maintain function and appearance through regular use.

• Durable plastic resists cracking from sun and temperature cycles
• Sturdy construction handles vibration from highway travel
• Low-maintenance — wipe clean or rinse if needed

How simple is installation and what size opening is required?

Installation is bolt-on and designed for straightforward fitting into side panels with a 3" hole. No specialized tools or professional service are necessary for most DIYers; basic hand tools and a few fasteners are all you need to secure each vent in place.

• Requires a 3" through-hole in the trailer or RV sidewall
• External face measures 8" x 6" for clean coverage around the opening
• Comes as a 2-pack so you can fit both sides or replace two vents at once

Which vehicles and spaces are these vents best suited for?

These vents are made to be universally compatible with many trailers, campers, RVs, and utility trucks. Their low-profile design and robust build make them practical for cargo bays, pet compartments, appliance bays, and living modules where extra exhaust points are desirable.

• Fits RVs, travel trailers, camper vans, and enclosed utility trailers
• Suitable for pet areas, storage compartments, and equipment lockers
• Works equally well for DIY ventilation upgrades or routine replacements

Who is this for? The Lonffery Sidewall Exhaust Vent Fan Kit is aimed at RV owners, trailer fleet managers, contractors, and outdoor enthusiasts who need reliable passive ventilation without rewiring or roof modification. If you want a robust, weather-resistant vent that’s easy to fit into a 3" opening and keeps enclosed areas fresher on the road, this two-pack offers practical value and durable performance.

Key specifications:

• Pack: 2 vents
• External plate dimensions: 8" x 6"
• Outer diameter (internal neck): 4.125"; inner diameter: 3" (requires 3" hole)
• Material: heavy-duty, UV-resistant plastic

Choose the Lonffery side vents for a straightforward, long-lasting method to improve ventilation in trailers and RVs without altering your roofline or electrical systems.