KHGUZ 2PCS RV Furnace Vent Cover, 2.8 Inch Stainless Steel Camper Flying Animal Screen with Installation Tool, Mesh Screen Accessories for RV Campers Trailers Water Heater Vents

Why these screens matter

Keeping critters and debris out of RV vents isn’t just about cleanliness; it’s about protecting expensive appliances and avoiding mid-trip headaches. I installed the KHGUZ vent covers on my trailer’s furnace ports to see if this simple stainless solution could stand up to real-world use—road miles, rain, bugs, and the occasional dusty boondocking spot. After multiple weeks of camping and a few hundred miles of travel, they’ve earned a spot on my short list of inexpensive upgrades that punch above their weight.

Build and design

The covers are made from stiff stainless mesh formed into a shallow cup (2.8 inches in diameter, 1.2 inches tall). The mesh is fine enough to stop wasps, moths, and wind-blown grit without feeling flimsy. The rim is smooth and consistent; I didn’t find rough edges that could catch a finger or scratch paint during installation. Each cover secures with a spring-loaded hook, and KHGUZ includes a small tool to tension the springs during install.

A few build notes from handling them:
- The mesh holds its shape under finger pressure—no kinks or soft spots, which is what you want if these are going to shrug off branches, road spray, and the occasional bump while you’re packing gear.
- The stainless finish is clean and even. After rain and a salt-dusted highway run, I saw no discoloration or corrosion.
- The profile is low. At 1.2 inches tall, they don’t protrude awkwardly or snag easily on covers or storage doors.

Installation

The hardware is straightforward: two covers and two spring hooks with an installation tool. The process took me about ten minutes for both vents once I got the hang of it. The trick is keeping tension controlled so you don’t launch a spring across the driveway.

Here’s how I got a clean, frustration-free install:
- Start with a completely cool appliance. Furnace exhausts can stay hot longer than you expect.
- Position the screen so it sits centered over the vent opening with even clearance all around.
- Thread the spring hook through the mesh first; the wire is robust enough that it doesn’t distort.
- Use the included tool on the notched end of the spring to pull and latch onto the vent’s existing grille or a suitable anchor point.
- Seat the bottom anchor first, then the top. This keeps the cover upright as you stretch the second hook.

Expect a snug fit. That’s good—it keeps movement to a minimum on rough roads. I’d recommend wearing light gloves to save your knuckles while tensioning the springs.

Fit and compatibility

At 2.8 inches in diameter, these covers are designed to sit over small, round RV furnace or water heater vents. On my furnace’s twin round ports, the coverage was ideal: the screens didn’t interfere with the door, and they cleared the trim with room to spare. That said, RV vent hardware varies widely by brand and model.

Before you buy, measure:
- The diameter of the vent opening or surrounding bezel
- The available flat area around the port for the screen to rest
- The distance to any nearby trim or latches that could be obstructed by a 1.2-inch tall cover

If your vent is significantly smaller than the 2.8-inch footprint, you may find these overhang more than you like. If you’re in an edge case, verify you’ve got solid anchor points for the spring hooks; that’s non-negotiable for a secure install.

One more point: always check your appliance documentation. Many furnace and water heater manufacturers allow aftermarket screens, but some note specific clearance requirements. You don’t want to restrict exhaust flow or recirculate hot gases.

Performance on the road

I ran my furnace through multiple cycles with the screens installed and didn’t notice any change in startup behavior, flame tone, or cycling intervals. The mesh density seems to hit the right balance—fine enough to stop pests and grit without stifling airflow. Outdoors, it’s often windy; even in gusty conditions, I didn’t hear whistling, rattling, or resonance from the covers.

On the prevention front:
- No more wasp scouting around the exhaust ports
- No moth wings or pine needles in the vent area after a breezy night
- No soot accumulation on the mesh after several heating cycles

In other words, the covers did exactly what I wanted: passive protection without drawing attention to themselves.

Durability and maintenance

After rain, a few muddy miles, and a day of fine dust, the stainless still looks fresh. The springs haven’t stretched out or loosened, and the covers haven’t shifted—no wobble, no sag. I’ve tugged on them a few times to check for play; they stay put.

For upkeep, I’m keeping it simple:
- Quick visual check before firing up the furnace
- Soft brush to knock off pollen or dust when it builds up
- Rinse with water if road grime collects after a long tow

If you ever notice soot buildup (rare with a healthy furnace), give the mesh a thorough cleaning and confirm the appliance is running properly. As with any vent screen, periodic inspection is part of the deal.

What I’d improve

These are well-executed for the price, but a few tweaks would make them even better:
- Include a spare spring and hook in the kit. Small parts have a way of disappearing in a gravel driveway.
- Provide a simple compatibility chart or template. The 2.8-inch footprint works for many round ports, but novices would benefit from clearer guidance.
- Offer additional diameters in the same listing. Having 2.0, 2.5, and 3.0-inch options would cover most common furnace and water heater configurations.

None of these are deal-breakers, but they’d make selection and installation more foolproof.

Safety and best practices

A couple of practical reminders from the installation and testing:
- Never install or remove while the appliance is hot.
- After installation, run the furnace while you’re outside listening for unusual sounds and checking for any signs of restricted flow (sooting, smell, or heat buildup around the vent). If anything seems off, remove the screen and reassess.
- Don’t use these on generator exhausts or engine tailpipes—those require purpose-built hardware.
- If you store your RV long-term, consider inspecting or removing the screens before winterizing, then reinstall in spring.

Value

Considering you get two stainless screens, two springs, and a usable installation tool, the KHGUZ kit is a solid value. Comparable RV screens often come as single units, and plenty still use softer wire that deforms with minor bumps. These feel like they’ll go multiple seasons with minimal care. If you’ve priced even a basic furnace service call, the cost of a screen set is a rounding error by comparison.

The bottom line

The KHGUZ vent covers are a practical, durable way to keep pests and debris out of small round RV vents without compromising airflow. They install securely, ride well on the highway, and resist rust—exactly what I want from a set-and-forget accessory. The sizing won’t be universal, so measure your vents before ordering, and follow basic safety checks after installation.

Recommendation: I recommend these vent screens. They’re well-made stainless, stay tight once installed, and provide effective protection against bugs, rodents, and windblown debris. As long as your vents match the 2.8-inch footprint and you take a minute to verify clearances, this is an easy upgrade that helps protect your furnace or water heater with almost no maintenance.