Bonsai HEPAFLOW-12C Laminar Flow Hood | H14 HEPA – Midwest Grow Kits
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Bonsai H14 99.995% HEPA Horizontal Laminar Flow Hood - Natural Clear Coat Finish

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$33999
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Compact 12"x12" horizontal laminar flow hood with H14 HEPA filtration, 99.995% at 0.3 microns, and 200+ ft/min airflow. Personal-sized footprint, USA-built birch plywood cabinet, ~15-minute tool-free assembly, and a 3-year motor warranty.

🔥 46 purchased in the last 30 days
⭐ 1000+ units sold

Description

The Bonsai HEPAFLOW-12C Horizontal Laminar Flow Hood is a compact, personal-sized sterile workspace built for mushroom cultivation and lab work. It delivers true horizontal laminar airflow through a 12" × 12" H14 HEPA filter rated 99.995% efficient at 0.3 microns — giving you a reliable, contamination-reducing environment without the size, cost, or complexity of a full commercial hood.

Use it for pouring agar, cloning cultures, creating syringes, performing grain-to-grain transfers, and inoculating jars, bags, and substrates.

  • Horizontal laminar flow
  • H14 HEPA
  • Personal & portable
  • Made in the USA
  • 3-year motor warranty
  • 12" × 12"H14 HEPA filter
  • 99.995%@ 0.3 microns
  • 200+ ft/minAirflow
  • 15"×26"×15"Footprint
  • 26.5 lbsWeight

Bonsai laminar flow hood overview.

Introduction to Bonsai laminar flow hoods.


Why growers pick the HEPAFLOW-12C

  • True horizontal laminar airflow – Creates a uniform sterile air curtain across the work surface.
  • Personal & portable – Sized for home labs, classrooms, and small workspaces.
  • Lab-grade performance – Engineered using biopharmaceutical airflow standards.
  • Beginner-friendly design – Optional acrylic side air buffers help new users learn airflow control.
  • Built in the USA – CNC-precision manufacturing with durable cabinet-grade plywood.

What's included

  • 1× Bonsai HEPAFLOW-12C flow hood with 12"×12" H14 HEPA filter installed
  • 10' grounded power cord
  • Full user guide covering sterile technique, agar work, and syringe creation

How it's used

  1. Assemble. Use the tool-free Click n' Twist system — about 15 minutes, no special tools.
  2. Power on. Let the HEPA-filtered air run for a few minutes to establish a steady laminar flow before starting work.
  3. Set up your work. Position your agar plates, jars, or syringes inside the sterile air curtain at the front of the work surface.
  4. Work in the airflow. Perform transfers, pours, or inoculations within the airflow zone, keeping hands and tools inside the curtain.
  5. Power off after use. Plan to replace the HEPA filter about every 24 months under typical hobby use, sooner with heavy use.

Plan for the filter: plan on replacing the H14 HEPA filter about every 24 months for typical hobby use, or 12–18 months in a busy lab, and confirm with an agar plate test. When it's time, the HEPAFLOW-12 replacement filter swaps right in.

Specifications

Specification Detail
Filter 12″×12″ H14 Minipleat HEPA
Filter efficiency 99.995% @ 0.3 microns
Pressure drop 0.58 @ 100cm
Blower 135 CFM, private-label component (Sub-Zero/Wolf Appliances)
Airflow speed 200+ feet per minute
Voltage 120V grounded, 16-gauge power cord
Assembled dimensions 15″W × 26″H × 15″D
Weight 26.5 lbs
Construction 3/4″ pre-finished cabinet-grade birch plywood, natural clear coat
Assembly ~15 minutes, tool-free (Click n' Twist)
Replacement interval Plan on about 24 months for typical hobby use (12–18 months in a busy lab); confirm with an agar plate test
Warranty 3-year motor warranty
SKU FL9

Want a spare in the box?The HEPAFLOW-12 Extra Filter Bundle is the same hood with a second HEPA filter included. Need more room? Step up to the Bonsai XL 24″×18″.

When to replace the HEPA filter

There's no single expiry date for a HEPA filter. It wears out two ways: dust loading, which tracks run hours and how clean your room is, and aging of the media and gasket seals, which tracks the calendar. Plan on about 24 months for typical hobby use and 12–18 months in a busy lab. Keep it in service as long as it passes an agar plate test and holds its airflow, and replace it sooner if it doesn't.

HEPA filter replacement chart for FFUs and flow hoods: planning hours and calendar months by environment, from dusty 24/7 industrial use at 6–12 months to very light hobby use at 36–48 months

Our HEPA filter replacement guide explains each row of the chart and walks through four simple tests (agar plates, a flame test, an anemometer reading and a pre-filter check) that tell you when your filter is actually done.

FAQ

How is this different from the HEPAFLOW-12 Extra Filter Bundle?

Same 12"×12" hood — the Extra Filter Bundle adds a spare replacement HEPA filter in the box.

Will this fit on a desk or table?

Yes. At 15″×26″×15″ and 26.5 lbs, it's sized for a home lab desk, table, or shelf.

How long does the HEPA filter last?

For typical hobby use, plan on replacing it about every 24 months; in a busy lab running most of the day, every 12–18 months; and in a dusty, round-the-clock space, every 6–12 months. Some manufacturers recommend replacing as often as every 12 months, because filter media and seals age even when the unit isn't running. Treat 24 months as a planning number, and let an agar plate test and an airflow check tell you when it's actually done. Our HEPA filter replacement guide has the full chart and four simple tests. The filter is replaceable when it needs to be swapped.

I need a bigger work surface — what are my options?

For a larger sterile zone, step up to the Bonsai XL 24″×18″, or for commercial and multi-person use the Bonsai Commercial 48″×24″.

What's the warranty and return policy?

This unit carries a 3-year motor warranty. Unopened units are eligible for return; opened units are eligible for exchange only. Shipping damage is handled promptly. Ships via FedEx from a U.S.-based facility.