Rhino Pro Carbon Filters – 4" to 12" (All 11 Sizes) + Dust Sleeves
Rhino Pro Carbon Filters – 4" to 12" (All 11 Sizes) + Dust Sleeves
There's a reason people describe a good carbon filter as "boring". It's the highest compliment the category allows. A boring filter goes up on day one and you never think about it again. No smell creeps out, no fan strains, and nobody upstairs starts asking questions. The Rhino Pro has been the UK's favourite boring filter for around 20 years, and it's earned that reputation the hard way: by working, for a long time, without fuss.
This listing carries all 11 Rhino Pro sizes, from a compact 4" to a 1.2-metre 12". It also stocks the genuine replacement dust sleeve for every one of them, so you're not hunting around when yours turns grey.
What's inside a Rhino Pro
- A deep 50mm bed of virgin Australian RC412 carbon. RC412 is the benchmark carbon in grow-room filtration. It's highly porous with a huge internal surface area for odour molecules to stick to. Rhino machine-packs it tight, so every grain does its job and none of it rattles loose.
- A vortex cone base. The aluminium interior is shaped like a cone, so incoming air swirls round the carbon bed rather than rushing straight through one spot. The result is more even wear and a longer life.
- 51% open-area mesh. Wide mesh lets air through easily, which means less resistance for your fan and better performance in humid rooms.
- A lightweight aluminium body. Much easier to lift and hang than steel-bodied filters of the same size.
- A dust sleeve in the box. The pre-filter catches dust before it can clog the carbon.
Which one is yours?
| Size | Neck × body | Max airflow | Best for |
|---|---|---|---|
| 4" | 100 × 300mm | 350 m³/h | Small tents, cupboards, mushroom and herb chambers |
| 5" | 125 × 300mm | 500 m³/h | 60–80cm tents on a 5" fan |
| 6" | 150 × 300mm | 600 m³/h | 80cm–1m tents, the classic 6" setup |
| 6" | 150 × 600mm | 900 m³/h | 1–1.2m tents and strong 6" fans |
| 8" | 200 × 400mm | 800 m³/h | 1.2m tents with limited headroom |
| 8" | 200 × 600mm | 1,125 m³/h | 1.2–1.5m tents and small rooms |
| 10" | 250 × 600mm | 1,420 m³/h | Grow rooms on 10" ducting |
| 10" | 250 × 1000mm | 1,900 m³/h | Large rooms and powerful 10" fans |
| 12" | 315 × 600mm | 2,440 m³/h | Big airflow where ceilings are low |
| 12" | 315 × 1000mm | 3,250 m³/h | Large rooms and high-power 12" fans |
| 12" | 315 × 1200mm | 3,600 m³/h | The biggest rooms; Rhino's largest filter |
Spare dust sleeves
A clogged pre-filter is the commonest reason a good carbon filter seems to "stop working". The carbon is usually fine, but the fan can't pull air through the dusty sleeve, so smell leaks out instead. Each replacement sleeve is the genuine Rhino Pro part, cut for its specific filter size. Pick the sleeve that matches your filter's neck and body length (for example, 150 × 600mm).
Not just for growers
A carbon filter takes smell out of moving air, which turns out to be useful in a lot of places:
- Grow tents for herbs, chillies, tomatoes and flowering houseplants
- Mushroom fruiting chambers, which have a surprisingly earthy aroma
- Drying rooms for herbs, chillies and flowers
- Fermentation and home-brew corners
- Hobby rooms with paint, glue or resin smells (for odour only; a carbon filter is no substitute for proper fume extraction or a respirator)
Rose's Pro-Tip
"Give it a moment. Rhino's whole design is about contact time: the slower air passes through the carbon, the more odour it leaves behind. So don't run a filter at its maximum rating. Choose one rated about 20% above your fan and it'll scrub better and last longer. And when the dust sleeve goes grey, change it. It costs a few pounds and protects a filter that cost a hundred."
How to match a filter to your fan
Start with the duct diameter. It's simplest when fan, filter and ducting all share one size. If they differ, pick a filter slightly bigger than the fan, never smaller. Ducting and the filter both add resistance, so your fan will move less air in real life than its free-flow rating suggests. Where a size comes in two lengths, the longer one holds more carbon and lasts longer.
Specifications
- Carbon: virgin Australian RC412 activated carbon, 50mm bed, machine-packed
- Body: lightweight aluminium end caps with a vortex cone base
- Mesh: 51% open area
- Supplied with: pre-filter dust sleeve
- Use: exhaust or intake, mounted vertically or horizontally
FAQ
How long does a Rhino Pro last?
Rhino rates it at up to two years of continuous use, and many growers get longer. Humidity, dust and how hard the filter is pushed all make a difference. A clean sleeve and humidity under about 80% help most.
Does it need a fan?
Yes. A carbon filter is passive. It needs an inline fan of the same (or slightly smaller) duct size to pull air through it.
Which sleeve do I need?
The one with the same neck size and body length as your filter, both printed on the Rhino label (e.g. 200/600).
How do I hang the big ones?
The 1-metre 10" and 12" models weigh 27–36kg. Use a filter stand or strong ceiling chains, never the ducting.