That yellowed, cracked, or missing cover over your bathroom exhaust fan isn’t just an eyesore—it’s actively reducing the fan’s ability to pull moisture and odors out of the room. A properly fitted grille directs airflow evenly, prevents ceiling drafts, and can even improve the acoustics of a noisy fan. Swapping it out is one of the fastest, lowest-effort bathroom upgrades you can make, and it requires zero electrical knowledge.
I’m Min — the co-founder and writer behind Gadgets Feed. For this guide, I sorted through the compatibility matrices, spring-span measurements, and material composition data of dozens of vent covers to identify the models that fit their claimed dimensions reliably and which ones leave you with a loose or gap-ridden installation.
Whether you need a standard spring-loaded square grille or a combined lens-and-grille assembly for a light/fan combo unit, this roundup covers the most reliable options for your best bathroom vent cover replacement.
How To Choose The Best Bathroom Vent Cover
Selecting the correct replacement cover hinges on three things: the physical shape and size of your ceiling opening, the attachment mechanism your fan housing uses, and whether you need to also replace an integrated light lens. Buying the wrong dimensions or spring spacing is the single most common mistake, and it results in a cover that either wobbles or won’t snap in at all.
Measure Your Opening and Slot Spacing
For square grilles, you need two numbers: the rough ceiling opening (typically 12×12 inches) and the distance between the two mounting slots where the springs hook inside the fan housing. Most universal spring-loaded covers require the slot spacing to fall between 7.5 and 11.6 inches. If your fan is an older Broan-NuTone model with a light, you likely need a specific lens-and-grille kit rather than a general spring grille.
Material Matters: ABS vs. Polypropylene
ABS plastic is denser and more rigid than polypropylene, which gives it better resistance to warping in humid environments. Polypropylene is lighter and easier to snap into place but can feel flimsy on larger openings. For a premium look that stays white, a thick ABS grille with a matte finish is your best bet.
Integrated Light Lens Considerations
If your fan unit has a built-in light, the grille and lens are often one inseparable assembly. Replacing just the grille won’t work because the lens holds the assembly against the ceiling. Look for kits like the S97013662 or 85315000 that include both components, and check if the new lens is less opaque than the original—this can significantly brighten the room.
Quick Comparison
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| Model | Category | Best For | Key Spec | Amazon |
|---|---|---|---|---|
| Broan-NuTone FG600 Grille Upgrade | Premium | Integrated LED + no-wire install | 750 Lumens, 3000K LED, plug-and-play | Amazon |
| Broan-NuTone Motor & Cover Kit | Mid-Range | Motor + cover combo replacement | 50 CFM, 4.0 Sones, fits 7.25×7.5″ housing | Amazon |
| Sfneer S97013662 Kit | Mid-Range | Broan 655-696 lens + grille swap | Includes lens, grille, reflector | Amazon |
| Zixixvan 85315000 Replacement | Mid-Range | Brighter lens for Broan 663-769 series | ABS material, 100W rated, 10 dB noise | Amazon |
| Sfneer 85315000 Light Cover | Budget-Friendly | Budget lens + grille for Broan 663-769 | ABS plastic, 10.82×12.32″ grille | Amazon |
| WiseWater 12×12 Spring Grille | Budget-Friendly | Universal square grille with springs | 12.2×12.2″, ABS, slot span 8.8-9.8″ | Amazon |
| BQMEZRNUS 12×12 Spring Grille | Budget-Friendly | Budget polypropylene spring cover | PP plastic, 12×12″, 2 spring pairs | Amazon |
In‑Depth Reviews
1. Broan-NuTone FG600 Grille Upgrade
The FG600 is a category unto itself—it replaces both the grille and the entire light assembly with a single plug-and-play unit that includes a 750-lumen, 3000K soft-LED panel. That means no separate bulb, no lens to clean, and a 25,000-hour rated lifespan. The integrated pass-through plug lets you keep your existing motor connected without any extra wiring.
The grille uses fewer ventilation slots than standard covers, which Broan claims helps it stay clean longer. In practice, the reduced slot count does seem to collect less dust, and the white matte finish blends well with most ceiling paints. At 10.25 inches wide, it fits a narrower housing footprint than typical 12-inch square grilles, so measure your fan opening carefully.
Installation takes under five minutes: remove the old cover, plug the FG600 into the fan receptacle, then plug the motor into the grille’s pass-through port. It’s the most expensive option here by a wide margin, but you’re paying for a complete lighting upgrade that would otherwise require a separate fixture.
Why it’s great
- Integrated 750-lumen LED eliminates yellowed lenses
- Pass-through plug makes wiring completely tool-free
- Fewer slots reduce visible dust accumulation
Good to know
- Only fits specific Broan models with a 7.25×7.5″ housing
- Light is not dimmable
2. Broan-NuTone Genuine Fan Motor and Cover Kit
If your fan housing is still solid but the motor has gotten loud or weak, this kit is the most efficient fix. It includes a 50 CFM motor rated at 4.0 Sones and a new white plastic cover that fits Broan and Nautilus housings measuring 7.25 by 7.5 inches. The motor attaches directly to the existing bracket with no wiring required, though you will need to connect the plug.
The replacement cover clips are designed for a snug fit, but some users report the clips can be slightly too long, leaving a small gap against the ceiling. In that case you can reuse your old cover if it’s still in decent shape. The new motor is quieter than many 20-year-old original units, though at 4.0 Sones it’s still audible—you’ll hear it running during showers.
Installation is genuinely a 10-minute job if you have access to the housing from below. No drywall cutting, no attic access needed. The capacitor may require a piece of tape to hold it in place during installation. Overall, this is the logical choice when your fan is underperforming and the grille is secondary to the motor.
Why it’s great
- Replaces motor and cover in one box without rewiring
- Direct fit for common Broan/Nautilus metal housings
- Noticeably quieter than original motors from 10+ years ago
Good to know
- Cover clips may not sit flush against some ceiling textures
- No light kit or lens included
3. Sfneer S97013662 Fan Cover Grille and Lens Assembly Kit
The S97013662 is a direct replacement for the combined grille-and-lens assembly used on Broan-NuTone models 655 through 696, including the popular 659 and HFL695. The kit includes the outer grille, the inner lens, and the reflector plate. The lens is noticeably less opaque than the original factory part, which makes the bathroom feel significantly brighter with the same 60W bulb.
The assembly is held against the ceiling by the reflector plate and a pair of nuts—no springs involved. This design means the installation is more secure than a spring clip arrangement, but it requires you to remove the bulb, unfasten the old reflector, and then reassemble everything in reverse. That process takes about 10 minutes and demands a steady hand when reattaching the nuts.
Multiple verified reviewers with 30-year-old fans confirm it fits perfectly and even allows a slightly easier ceiling alignment because the outer dimension is a bit larger than the original. The ABS plastic feels denser than the polypropylene used on budget spring grilles, so it resists sagging over time.
Why it’s great
- Clearer lens dramatically improves light output
- Fits multiple old Broan models with high accuracy
- Reflector-based mount is more secure than springs
Good to know
- Installation requires removing and reinstalling the reflector
- Only compatible with fan models that have a center light
4. Zixixvan 85315000 Replacement Ventilation Fan Grille Lens
This Zixixvan kit covers the same Broan 663 through 769 series as the cheaper Sfneer version, but it uses a tougher ABS material and includes a 30-day money-back guarantee and 12-month warranty. The grille attaches via the reflector rather than springs, which is the correct installation method for this family of fans.
The standout feature here is the lens clarity. Owners of 20-year-old fans report that swapping the yellowed original lens for this one instantly brightens the entire room. The light distribution is noticeably more even thanks to the less opaque plastic. At 10 decibels the grille itself is silent—the noise you hear comes from the motor behind it.
Make sure to check the inside structure of your fan before ordering. This kit is for fans where the cover is held in place by the reflector, not by nuts on the housing itself. The package includes the grille and lens only, no reflector plate, so if your reflector is damaged you’ll need a different solution.
Why it’s great
- ABS material won’t warp or yellow as fast as standard plastic
- Much brighter light vs. original 90s-era lens
- 12-month warranty for quality issues
Good to know
- Reflector not included
- Only fits reflector-held fan models
5. Sfneer 85315000 Bathroom Exhaust Fan Vent Cover
This is the entry-level version of the 85315000 replacement pattern, compatible with Broan-NuTone models 663 through 769 as well as the 763RL and 769RL series. The grille measures 10.82 by 12.32 inches and is made from ABS plastic, though the material feels slightly thinner than on the Zixixvan variant.
The lens does a good job of replacing a yellowed original, and the diffused plastic provides a noticeably cleaner light output. Verified reviewers note that the grille is slightly larger than the original part, which actually helps with ceiling alignment if your opening is slightly oversized. The installation method—held by the reflector—is the same as the other lens kits in this category.
The key consideration is compatibility: this grille does not attach with springs, and many older units had spring-mounted covers. If your fan uses springs, this won’t work. Check the inside of your housing to see how your current cover is held in place before ordering. If it uses a reflector nut system, this is the most affordable way to refresh both the look and the light quality.
Why it’s great
- Budget-friendly way to replace yellowed lens and grille
- Larger outer dimension helps cover imperfect ceiling cuts
- Brightens the room compared to original 1990s lens
Good to know
- Does not use springs—only works with reflector mount
- ABS feels slightly less dense than premium-priced alternatives
6. WiseWater 12×12 Bathroom Ceiling Fan Grille with Springs
The WiseWater grille is a spring-loaded square cover with a panel size of 12.2 by 12.2 inches, designed for ceiling openings that are under 12.2 inches wide. The critical spec here is the spring-slot distance: it requires the mounting slots on your fan housing to be between 8.8 and 9.8 inches apart. Measure this before you buy, because a mismatch means the springs won’t reach.
The material is ABS rather than polypropylene, which makes it noticeably more rigid than the cheapest alternatives on the market. This rigidity helps the grille stay flat against the ceiling without sagging in the middle, a common complaint with thinner plastic covers. The step-down grille design distributes airflow evenly across 360 degrees, reducing the occasional cold draft you feel with flat, open-louver covers.
Installation is the simplest of any option here: just snap the pre-attached springs into the fan housing slots. No tools, no wiring, no reflector to remove. Verified buyers with 1960s-era bath fans report it fits and looks fantastic, though the finish is “unfinished” white plastic rather than a painted matte surface.
Why it’s great
- Rigid ABS resists sagging in humid bathrooms
- Spring snap-in install takes under 60 seconds
- Step-down grille reduces uneven airflow and drafts
Good to know
- Requires slot spacing between 8.8 and 9.8 inches
- Finish is basic white plastic, not matte painted
7. BQMEZRNUS 12×12 Bathroom Exhaust Fan Cover
This is the lowest-cost spring grille in the roundup, and it shows in the material choice: polypropylene (PP) instead of ABS. At 12 by 12 inches with a thickness of 0.3 inches, it’s a standard square cover that fits ceiling openings of roughly 13 inches. It comes with two pairs of springs to accommodate two different slot-spacing ranges (around 7.5 inches and 11.6 inches), which is unusual for this price tier.
The step-down structural grille design is meant to distribute intake evenly, and it does work reasonably well for the price. However, the polypropylene is noticeably more flexible than ABS, which means the grille can bow slightly if the springs are tensioned unevenly. Several verified buyers describe it as “cheap looking” up close, though once installed, it looks clean from floor level.
If your home is older and uses non-standard spring clip spacing, the two spring pairs give you more compatibility than a single-pair grille. But if your ceiling opening is exactly 12 inches square and you want a rigid, flush fit, the extra spent on an ABS model like the WiseWater will be worth it.
Why it’s great
- Two spring sets cover a wider range of slot spacings
- Extremely budget-friendly for a quick replacement
- Step-down grille helps circulate air evenly
Good to know
- Polypropylene feels less rigid and can flex under tension
- Some buyers note the appearance is not premium close up
FAQ
How do I measure my fan housing to find the correct vent cover?
Can I use a standard spring grille on a Broan fan that has a light?
Why does my new vent cover not sit flush against the ceiling?
Final Thoughts: The Verdict
For most users, the best bathroom vent cover winner is the Broan-NuTone FG600 Grille Upgrade because it completely replaces the light assembly with a 750-lumen LED panel and installs without any wiring. If you need a motor-and-cover kit for a failing fan, grab the Broan-NuTone Motor and Cover Kit. And for a simple spring-mount square grille that fits a wide range of older fans, the WiseWater 12×12 Spring Grille delivers a rigid ABS fit at a fair price.