MUZHUPGUZ 30 Pcs Electrical Outlet Insulation Pads,Draft Sealers,Foam Gasket for Electrical Outlet Plates, Wall Insulation Gasket for Switch Covers,Switch Plate

A simple way to tighten up leaky walls

A few hours with a screwdriver can make an older house feel tighter. That’s exactly what I set out to do with the MUZHUPGUZ foam gaskets—slim sheets of EVA foam that sit behind your outlet and switch plates to block air leaks. They’re inexpensive, low-fuss, and surprisingly effective at taming drafts that sneak through electrical boxes, especially on exterior walls.

What you get

The kit includes 30 white EVA foam pads. They arrive as pre-cut sheets designed to fit common U.S. wall plates—single-gang and double-gang, with perforations for typical device openings (duplex outlets, toggle switches, and rocker/Decora switches). Each pad is thin, compressible, and light. They disappear once the cover plate goes back on, so you won’t see them after installation.

The foam itself feels consistent and pliable rather than crumbly. There’s no noticeable odor, and the sheets don’t leave residue on the wall or plate. In short, they’re the kind of utility material you want for this job: simple, clean, and fuss-free.

Installation and setup

If you’re comfortable with a screwdriver, you’re already most of the way there. My process looked like this:

1) Turn off the circuit at the breaker or, at minimum, verify you won’t touch live parts. You’re removing the plate, not the device, but safety first.
2) Remove the cover plate screws and plate.
3) Choose the gasket that matches your device and “pop out” the perforated sections you need. If a perforation doesn’t release cleanly, a sharp utility knife makes quick work of it.
4) Place the foam between the wall and the plate, align openings, then reinstall the screws. Tighten until snug, not gorilla-tight—you’re compressing foam, not clamping lumber.

It took me about two to three minutes per plate after the first couple. The only fiddly part is the perforations: for most openings, they release cleanly, but small bridge pieces sometimes hang on. Having a knife on hand keeps things tidy.

A few fit tips:
- If a plate starts to bow, you’re overtightening. Back off a quarter-turn.
- For rocker/Decora devices on sloppy drywall cutouts, make sure the foam isn’t catching the device ears; reposition if necessary.
- On double-gang plates with mixed devices (say, a switch plus a duplex), I found it cleaner to trim one pad rather than stack pieces.

Performance: do they actually stop drafts?

Yes, in a way you can feel. On my exterior walls, a light tissue test before installation showed a noticeable flutter at a few outlets when HVAC cycled on. After installing the gaskets, the flutter stopped or was dramatically reduced. Rooms with a persistent “cold stripe” near baseboards felt more uniform once I sealed the outlets and switches along those walls.

This isn’t going to replace proper air sealing at framing penetrations or weatherstripping on leaky doors, but it’s a smart, quick win. It also has a compounding effect: every small leak you plug helps your heating and cooling system work a little less hard. Beyond comfort, sealing these gaps curbs dust and odors that can track through the wall cavity. In my kitchen, I noticed less fine dust collecting around a problem outlet after installation.

There’s a secondary benefit worth noting: closing up a pathway is a good general tactic against tiny household intruders that like to travel inside wall cavities. You shouldn’t rely on foam gaskets as a pest-control strategy, but fewer open gaps never hurts.

Build quality, thickness, and compression

The EVA foam used here is soft and compressible. It feels slightly thicker than paper-style gaskets I’ve used from big-box stores, which is good for sealing uneven drywall edges. The tradeoff is that on very rigid or brittle plates, over-tightening can cause a subtle bow. This isn’t unique to these pads—it’s the nature of compressible gaskets—but it’s worth mentioning if you have thin, older plates. Snug, not tight, is the right finish.

Perforation accuracy is decent across the set. Expect the majority of cutouts to push cleanly; expect a handful to require a knife. On double-gang openings with narrow dividers, a slow, deliberate push gives the best results. Because the pads try to accommodate multiple device styles in one sheet, there are more little cut bridges than on single-purpose gaskets. It’s not a deal-breaker, but it does add a minute here and there.

Where these pads shine

• Quick comfort gains: They noticeably reduce drafts on exterior walls and make room temperatures feel more consistent near outlets and switches.
• Low cost, high coverage: A 30-pack is enough to knock out most of a small house or to prioritize perimeter rooms and upstairs exterior walls.
• Flexible fit: One set can handle outlets, toggles, and rocker switches, as well as single- and double-gang plates.
• Clean, invisible result: Once installed, you won’t see them, and they don’t interfere with normal device use.

Where they fall short

• Perforation fussiness: Some cutouts are “almost” there. Keep a utility knife handy to avoid tearing or losing small sections unintentionally.
• Plate bowing risk: The foam is soft but not paper-thin. Over-tighten and fragile plates can dish slightly—snug is best.
• Not a substitute for real air sealing: If you’ve got gaps around the box or a poorly cut drywall opening, you’ll still benefit from caulk or foam sealant around the box perimeter in addition to the pad.

Safety and code notes

• Always kill power or use a non-contact tester before removing plates. You’ll be working near live conductors.
• These pads sit behind the cover plate—not inside the electrical box. Don’t stuff foam into the box with the conductors.
• If you’re in a location that requires fire-rated assemblies (garages, multi-family firewalls, etc.), consult local codes. Foam gaskets like these are for air sealing; they aren’t a fire-stop.

Alternatives and how to choose

• Paper/fiber gaskets: Thinner, often punch-clean, but less forgiving on uneven drywall and leaks.
• Caulk or low-expansion foam around the box: Excellent for large gaps at the drywall-to-box interface; best paired with gaskets for a complete seal.
• Screwless or oversized plates with integrated seals: Neat, premium look, but pricier and not as retrofit-friendly across varied devices.

For most homeowners and renters, these foam gaskets hit a sweet spot: reversible, cheap, and effective enough to feel.

Who will get the most from these

• Older homes with leaky exterior walls. If you feel cold air around outlets in winter or warm drafts in summer, start here.
• Rooms with uneven comfort or persistent dust near outlets and switches.
• DIYers looking for quick wins before bigger weatherization projects.

The bottom line

The MUZHUPGUZ foam gaskets are a straightforward, useful upgrade for tightening up an interior without opening walls or touching wiring. Installation is simple, performance is tangible, and the price-to-impact ratio is hard to beat. They’re not perfect—the perforations occasionally need a knife, and you should avoid cranking down the screws—but those are minor annoyances in an otherwise effective product.

Recommendation: I recommend these pads. They deliver real draft reduction for minimal effort and cost, cover the most common outlet and switch configurations, and disappear once installed. If you’re chasing a tighter, more comfortable home, this is an easy box to check on your weatherization punch list.