DIY Laminar Flow Hood Kit 24x18 | HEPA Filter + Blower – Midwest Grow Kits
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Bonsai DIY 24" X 18" XL Flow Hood HEPA Filter, Blower Kit

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$17900
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Build your own XL laminar flow hood: a 24" x 18" HEPA filter rated 99.99% at 0.3 microns plus a matched 549 CFM blower, pre-wired with an in-line switch. Blower also sold alone.

Variety
🔥 7 purchased in the last 30 days
⭐ 50+ units sold

Description

The Bonsai DIY 24" x 18" XL Flow Hood Kit gives you the two parts that matter most in a laminar flow hood — a 24" x 18" HEPA filter rated 99.99% at 0.3 microns and a pre-wired centrifugal blower matched to it — so you can build the cabinet yourself.

Order the Blower & Filter Bundle to build a complete XL hood, or the Blower Only if you already have a filter or are designing your own build. The blower moves 549 CFM at 1430 RPM and comes pre-wired with an in-line switch, so there is no electrical work.

  • Build your own hood
  • 99.99% HEPA
  • Pre-wired blower
  • Bonsai brand
  • 24" x 18"HEPA filter
  • 99.99%@ 0.3 microns
  • 549 CFMAt 1430 RPM
  • 1/10 HPBlower motor
  • 1 yearBlower warranty

Why growers pick the DIY XL kit

  • The hard parts, done – A true HEPA filter and a matched blower are what make a flow hood work. The cabinet is the easy part.
  • Big work area – A 24" x 18" filter face gives you room for agar work, grain transfers and LC work side by side.
  • Matched airflow – The blower is matched to the HEPAFLOW-XL filter for smooth, consistent laminar airflow.
  • Plug-and-play blower – Pre-wired with an in-line switch, so there is no wiring to do.
  • Quality motor – A private-label blower from the supplier that builds blowers for Sub-Zero and Wolf appliances.

What's included

Blower & Filter BundleBoth parts below. Blower Only includes just the blower.

  • HEPAFLOW-XL HEPA filter – 24" x 18" x 2.8", aluminum frame with a built-in gasket to prevent bypass leakage
  • Centrifugal blower – 1/10 HP, 549 CFM at 1430 RPM, pre-wired with a power cord and in-line switch

The cabinet, pre-filter and fasteners are not included. You build the housing to fit your space.

How to build your hood

  1. Plan the box. Build an airtight plenum box with one face cut to fit the 24" x 18" filter, and an intake opening sized for the blower.
  2. Mount the blower. Fasten the blower so it pushes air into the box. Add a pre-filter on the intake side to protect the HEPA filter from dust.
  3. Seat the filter. Set the filter into the opening with its gasket against the box so all air has to pass through the filter media.
  4. Seal every seam. Air should only leave through the filter face. Any gap lets unfiltered air bypass the HEPA.
  5. Power on and work. Turn the blower on with the in-line switch, let it run before you start, and work in the clean airflow in front of the filter face.

Rather not build it? The Bonsai XL 24" x 18" Flow Hood uses the same filter size in a ready-made cabinet that assembles in about 15 minutes.

Specifications

Specification Detail
Brand Bonsai Filtration & Manufacturing
Options Blower & Filter Bundle, or Blower Only
Filter HEPAFLOW-XL HEPA filter
Filter size 24" x 18" x 2.8"
Filter efficiency 99.99% at 0.3 microns
Filter frame Aluminum, with built-in gasket
Static pressure rating 0.88"
Blower type Centrifugal, pre-wired with power cord and in-line switch
Blower motor 1/10 HP
Blower airflow 549 CFM at 1430 RPM
Warranty 1-year blower warranty
Not included Cabinet or housing, pre-filter, fasteners

Compare optionsWant clean air over a bigger bench without building anything? Our Bonsai fan filter units hang or sit over your work area, and our assembled laminar flow hoods come in 12" x 12", 24" x 18" and 48" x 24" sizes.

FAQ

What comes in the Blower & Filter Bundle?

A 24" x 18" x 2.8" HEPAFLOW-XL HEPA filter and a matched 1/10 HP centrifugal blower, pre-wired with a power cord and in-line switch. The cabinet is not included.

Can I buy the blower by itself?

Yes. Choose the Blower Only option if you already have a filter or are building a custom hood.

How efficient is the HEPA filter?

It is rated 99.99% efficient at 0.3 microns.

Do I need to do any wiring?

No. The blower comes pre-wired with a power cord and an in-line switch, ready to plug in.

Is the blower matched to the filter?

Yes. It moves 549 CFM at 1430 RPM and is matched to the HEPAFLOW-XL filter for smooth, consistent laminar airflow.

What warranty comes with the kit?

The blower carries a 1-year warranty.

What do I need to finish the hood?

An airtight box to mount the blower and filter in, a pre-filter for the blower intake, fasteners and sealant for the seams. All air should leave through the filter face.