A quick note before anything else: despite the name, this is not an official Bambu Lab product. It’s made and sold by a third-party accessory brand called VOXELPLA, who names it “Bambu Lab X-Filter” because it’s a drop-in replacement for the small carbon filter cartridge that ships stock in the P1S/X1/X1C (and reportedly the newer H2 series, X2D, and P2S). That naming convention — third-party parts named after the OEM slot they fill — is common enough in this market, but it means the listing can read as more official than it is. Worth knowing before you go looking for it on Bambu’s own store, because you won’t find it there.
What it actually is: a small combo cartridge that swaps in for the stock carbon-only filter, adding a HEPA 13 layer on top of the activated carbon. The pitch is that the HEPA stage catches ultrafine particulates and nanoplastics (VOXELPLA cites 99.95% capture) that a carbon-only filter just isn’t built to trap, while the carbon layer still handles VOCs and odor from ABS/ASA/PC prints. It’s a cheap, physically simple part — around $6 at last check — and installation is exactly as involved as pulling the old cartridge and pushing the new one into the same slot, no tools or reslicing required.
Here’s the part worth being upfront about: I haven’t found independent, third-party lab verification of that 99.95% capture claim — it’s the manufacturer’s own number, not something an outside test house has confirmed. It’s also worth noting this is a different product from VOXELPLA’s own “Bento Box” — a much larger standalone air-scrubber unit with its own fans and housing (also HEPA + carbon, also from VOXELPLA) — despite the overlapping branding and shared design goals. They’re not the same physical item, but the naming similarity between VOXELPLA’s own product lines makes it easy to conflate the two if you’re skimming listings. If particulate filtration matters to you for health reasons — printing a lot of ABS/ASA in a shared or poorly-ventilated space — treat the marketing numbers as a starting point, not a certified spec, and budget for actually verifying performance yourself if it’s a real concern rather than a nice-to-have.
The listed compatibility is broad — Bambu’s H2 series, X2D, P2S, X1C, and P1S are all named as fitting the same cartridge slot — which tracks, since Bambu has kept that internal filter bay geometry consistent across generations. At roughly $6, it’s cheap enough that even a skeptical buyer isn’t out much if it underperforms the marketing copy, and given it’s a physically simple two-layer cartridge (not an active/electronic component), the failure mode if the claims are overstated is “it filters about as well as the stock part,” not “it breaks something.” Just don’t expect a receipt from Bambu Lab’s own support line if something about the fit or performance doesn’t match expectations — that’s on VOXELPLA, not Bambu.
Pros
- Cheap, plug-and-play upgrade over the stock carbon-only filter with no tools or reslicing
- Adds a HEPA stage the stock cartridge doesn’t have, in theory catching finer particulates
- Fits the same slot across a wide range of Bambu enclosed printers
- Low cost makes it an easy add-on if you’re already ordering other print supplies
Cons
- Not an official Bambu Lab product — the name implies more legitimacy than it has
- Filtration performance claims (99.95%) are manufacturer-sourced, not independently verified
- Easy to confuse with VOXELPLA’s other, larger “Bento Box” filter product due to overlapping branding and purpose
- As a small consumable cartridge, expect to replace it periodically, with no official service-life spec published