Bonsai 2 x 2 ft 99.99% HEPA Flowhood Fan Filter Unit (FFU) 120V
Bonsai 2 x 2 ft 99.99% HEPA Flowhood Fan Filter Unit (FFU) 120V is backordered and will ship as soon as it is back in stock.
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Bonsai 2 x 2 ft 99.99% HEPA Flowhood Fan Filter Unit (FFU) 120V
Description
Description
The Bonsai 2 × 2 ft HEPA Fan Filter Unit (FFU) is a professional, cleanroom-grade fan filter unit for mushroom cultivation and sterile lab work — an affordable, space-saving alternative to a full laminar flow hood. It delivers true HEPA-filtered laminar airflow for agar work, grain jar and spawn bag inoculation, liquid culture, tissue culture, and any task that demands a clean-air workspace.
Unlike low-cost FFUs that cut corners with plastic blower assemblies and thin housings, every Bonsai FFU is engineered with premium upgraded components for better durability, quieter operation, longer service life, and more consistent airflow. With a shallow 14" depth and an integrated high-performance blower, it provides ISO Class 5 / Class 100 clean air without the bulk or cost of a traditional flow hood cabinet.
FFU or full laminar flow hood? For most home growers, this FFU works as a complete flow hood solution. If you want to compare both options before you buy, read our Laminar Flow Hood vs FFU guide — we built and tested both to show exactly where each one shines.
Premium Upgrades That Set Bonsai FFUs Apart
- Upgraded Aluminum Centrifugal Fan – A durable backward-curved aluminum blower wheel instead of the cheap plastic fans found in most competing FFUs.
- Heavy-Duty 20-Gauge Powder-Coated Aluminum Housing – A custom white powder-coated frame built for long-term durability and a professional cleanroom appearance.
- Magnetic Washable Electrostatic Pre-Filter – A reusable magnetic pre-filter that extends HEPA filter life and never needs replacement under normal use.
- True H14 HEPA Filtration – Certified 99.995% filtration efficiency at 0.3 microns for ISO Class 5 / Class 100 clean-air performance.
- Optimized Laminar Airflow – Designed specifically for sterile laboratory and mycology applications requiring clean, even airflow.
- Extended 18-Month Warranty – Backed by an industry-leading warranty for peace of mind and long-term reliability.
What You Can Do With This FFU
- Perform agar pours and transfers in a broad clean-air workspace
- Inoculate grain jars, spawn bags, and substrates with reduced contamination risk
- Handle liquid culture work in a professional sterile environment
- Upgrade from a still air box to active HEPA-filtered laminar airflow
- Create a dedicated clean workstation over a bench or table
Why Growers Choose the Bonsai 2×2 FFU
- Professional Cleanroom Performance – ISO Class 5 / Class 100 laminar airflow for sterile work
- Compact & Space-Saving – Only 14" deep, ideal for workbenches and smaller lab spaces
- Cost-Effective Alternative to Large Flow Hoods – Professional airflow without the size or cost of a full cabinet system
- Quiet & Efficient Operation – Premium blower system designed for extended lab sessions
- 3-Speed Adjustable Airflow – Fine-tune airflow to match your sterile technique and workflow
Technical Specifications
HEPA Filtration System
| Component | Specification |
|---|---|
| HEPA Filter | True H14 — 99.995% efficiency at 0.3 microns |
| Clean-Air Rating | ISO Class 5 / Class 100 |
| Filter Media | High-efficiency microfiber in a durable aluminum frame |
| Pre-Filter | Washable magnetic electrostatic pre-filter (reusable) |
Airflow & Performance
| Setting | Airflow |
|---|---|
| Fan Control | 3-speed adjustable |
| High Speed | 120 FPM |
| Medium Speed | 110 FPM |
| Low Speed | 100 FPM |
| Average Airflow | 500–530 CFM |
Motor & Construction
- Backward-curved aluminum centrifugal fan for smoother airflow and improved durability
- 20-gauge powder-coated aluminum housing
- Integrated pull handles for portability
- Standard 110/120V grounded power plug
Noise & Power Efficiency
| Metric | Rating |
|---|---|
| Noise Level | 50–60 dBA (comparable to a window AC unit) |
| Power Consumption | Approximately 250W at 100 FPM |
Dimensions & Weight
| Measurement | Value |
|---|---|
| Dimensions | 25" W × 25" H × 14" D |
| Weight | 37 lbs |
| Resistance | 0.327–0.682 IWG |
Who This FFU Is Best For
- Mycologists and mushroom growers upgrading from a still air box
- High-volume agar and inoculation workflows
- Home labs, classrooms, and commercial grow facilities
- Growers building a custom sterile workstation
Replacement Filters
HEPA filters are consumables that gradually load with particulates over time. A replacement H14 HEPA filter for the 2×2 FFU is available so you can keep a spare on hand. The washable magnetic pre-filter extends the main HEPA filter's life by catching larger particles first, so under normal use you'll replace filters far less often than with a standard FFU.
18-Month Warranty
Every Bonsai FFU is backed by our 18-Month Limited Warranty, covering manufacturer defects and workmanship issues under normal use. We engineered these FFUs with upgraded components specifically to provide longer service life and better reliability than lower-cost imported units.
Bonus Offer
Buy any Bonsai FFU or Flow Hood and save 50% on compatible accessories and replacement filters.
Accessories must be purchased at the same time for the discount to apply.
Shipping & Returns
- FREE shipping within the continental USA
- Unopened units eligible for return
- Opened units eligible for exchange only
- Shipping damage replacements handled promptly
Product Video
Let customers speak for us
I was getting alot of contam with northspore boomr bag strait garbage company. Contamination central at northspore almost everything contams. I tried a couple other companies then tried this blackcow. Its black gold Texas T the biggest dummy in the world will get massive flushes with this. The grain bags are awesome too and sterilized right. I went 14/14 on the grain bags. Midwest know what they are doing and even the packaging is next lvl everything double bagged. I only buy from midwest it's worth every cent
It's been several days since the Ecosphere arrived and I set it up, and I'm still amazed at all I got for the price: heater, fan, humidifier, two plug-in timers, two foil trays, and, of course, the five-tier tent with shelves and the plastic cover. Oh, and the LED light strip and the round air filters. It's everything I need right now, and I've started the growing process. It's a crazy good deal for the price. I'm new to mushroom growing, and I'm thrilled that I bought this setup as a start. Just plain wonderful.
Fast and easy colonization! These grain jars showed growth after just 10 days. My previous efforts with the all-in-one bags are taking MUCH longer but also working. Thank you Midwest Grow Kits 🙏
I love the people and the products. The people at MWGK clearly care about the integrity of the community they serve.
The monotub works amazing only had it a couple of weeks and about to have second harvest I used AIO grow bag for first flush and move to tub for second and its great not having to watch 24/7. Thanks Midwest
Four days after mixing grain, Select substrate, and the Midwest horse manure booster - the results speak for themselves.
It has everything you need for a fast, large flush success with fewer moving parts than a standard monotub. It is a surprisingly versatile option for more advanced students. Pic is 5 grain jar at 8 days. GT LM This is where I shop, now.
Rich, perfectly field-wet, sterile and it is perfect for those many varieties that won’t thrive quite as well in Bulk Substrate and Casing Mix, which I’ve seen as best for psilocybes/cyanescens. I’m using it for the first time with Lions Mane and King Trumpets. So far so good, 7 days and primordial and pins are starting to flourish. It drains better and is lighter than MGK’s Bulk Casing and Substrate. Great product.
Love the heater and how even and exact it heats. I set mine to 76 degrees and my room fluctuates from 64-75 and it holds solid at 75 degrees. I used a probe thermometer to double check the substrate level temp and its exactly 1 degree less than the heater setting. Another tip, I only needed to use the round monotub thermometer to check my humidity levels every so often. I would leave a filter disk on that hole instead of the thermometer. The only time it came in handy was after my first flush when humidity started to drop. I was able to use that gauge and check whether I needed to mist. Overall great kit and worth the money!
Ive bought mutiple jars before i came up with my own recipe, every jar produced healthy cultures, even if ones damaged in shipping they replace immediately, highly recommend
Very small chance that you get a contaminate you already had it and you’re either culture spores etc. their stuff is 100% sterile every time 100% of the time everything is viable never had a problem been shopping with them for sometime
It’s very good product and I highly recommend it to everyone.👏👏👏
I love my magnetic stir plate it works great for Liquid culture jars.
My bag had a slow start, but excellent finish. Oak Ridge.
Great product for my cannabis best deal around arrived fast thank you Midwest grow kits definitely will be purchasing again
