Calvana RV Vent Covers 2-Pack Black — Universal 3" Side Vent Cover, Bolt-On UV-Resistant

If you need a simple, durable vent solution for a travel trailer, cargo trailer, truck cap or camper van, these two black Calvana side vent covers provide a universal option that installs with basic tools. Each cover has an 8" × 6" external footprint and a 3" inner opening, and the set includes self-tapping screws for a bolt-on installation. Built from heavy-duty plastic, the vents resist UV, vibration, and weather exposure so they keep ventilation consistent while on the road.

Will these vents fit my trailer or truck side panel?

Measure the existing cutout: Calvana vents are designed for a 3" inner diameter opening. The faceplate spans 8" by 6", so they cover larger or slightly irregular cutouts and help create a clean external finish.

• External dimensions: 8" × 6" for full coverage and overlap.
• Inner opening compatibility: designed for a 3" pre-cut hole.
• Outer collar diameter: 4.125" to seat around the panel edge for stability.
• Comes as a 2-pack to outfit two locations or keep a spare on hand.

How do I install Calvana vent covers—do I need special tools?

Installation is straightforward and intended for DIY use. The vents bolt on with the supplied self-tapping screws, so typical hand tools are sufficient and no specialist equipment is required.

• Bolt-on design with 18 included self-tapping screws per pack for secure mounting.
• Requires a pre-cut 3" diameter hole in the side panel for the inner collar.
• Mounting recommended with basic tools: drill (for pilot holes if desired), screwdriver or drill-driver, and sealant if you want extra weatherproofing.
• Instructions: seat collar through cutout, align faceplate, drive screws evenly to avoid warping.

What performance benefits can I expect after fitting these side vents?

These vents are intended to promote continuous airflow in enclosed spaces, helping reduce trapped moisture and stagnant air without altering the vehicle’s structure. They don’t require power and provide passive ventilation that’s effective during travel and storage.

• Improves circulation inside trailers, truck boxes, and cargo enclosures.
• Helps limit condensation and reduce musty odors by allowing humid air to escape.
• Passive, maintenance-free operation—no filters or electricity needed.
• Durable plastic resists UV and road vibration for long-term reliability.

Who is this for? These Calvana vent covers suit RV owners, contractors, fleet managers, and DIY trailer builders who want a low-cost, long-lasting ventilation upgrade. They work well for anyone with pre-cut 3" side panel openings who needs a weather-resistant external vent to improve air movement and protect stored cargo or interior spaces from moisture and stale air. The 2-pack format gives you an extra vent for dual installations or a replacement on the go.