Walk in Chemical Fume Hood

The ZH Lab Walk-In Fume Hood is a high-capacity safety enclosure designed for large-scale equipment and pilot plant operations. This SEFA-1 compliant unit features an expansive 1600 mm maximum opening height, allowing users to roll tall reactors or heavy rigs directly into the workspace. Engineered with a triple-layer construction, it integrates a 1.2mm epoxy-coated steel exterior and a 5mm acid-resistant phenolic resin liner. Operating at adjustable face velocities from 0.3 to 0.5 m/s, the bypass airflow design ensures superior containment of hazardous vapors while maintaining high efficiency.

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Walk‑In Fume Hood for Large‑Scale Laboratory Applications

ZH Lab walk‑in fume hoods provide safe, flexible workspaces for large equipment, pilot plants, and big‑batch chemical operations. Unlike conventional fume hoods where you work through a small sash opening, our walk‑in design allows the user to step inside or roll a complete rig directly into the enclosure. The large front opening – 1500 mm in maximum opening height – gives you full reach, while the bypass airflow keeps contaminated vapour away from your breathing zone. The entire unit is delivered without water fixtures, so you are free to add your own utility layout as needed. Every hood meets SEFA‑1 construction and performance requirements, and the material package is specifically chosen for high acid/alkali resistance and fire retardancy.

SEFA-1 Compliant Performance and Safety

SEFA-1 refers to the Scientific Equipment and Furniture Association’s standard for laboratory fume hood construction and testing. ZH Lab walk-in hoods utilize a bypass airflow design to maintain stable air capture. This system effectively removes toxic vapors from the breathing zone.

Researchers can operate this hood safely at face velocities as low as 0.3 m/s (60 fpm). A built-in LCD/LED control system monitors exhaust status and lighting. Each unit includes a leakage protector and circuit overload protection to ensure electrical safety.

Triple-Layer Engineering and Material Density

The ZHF-W series utilizes a specialized triple-layer architecture for maximum chemical resistance. This design withstands heavy-duty industrial use in BSL-2 or BSL-3 environments.

Triple-layer construction for strength and chemical resistance:

  • Layer 1 (Exterior): 1.0 mm cold-rolled steel (SPCCT), finished with epoxy resin powder (80 µm thickness). Provides impact resistance, anti-rust, and surface chemical resistance.
  • Layer 2 (Intermediate support frame): 60×40×1.2 mm galvanized steel rectangular tubes. Acts as the internal skeleton, delivering high rigidity and load-bearing capacity for heavy equipment.
  • Layer 3 (Interior lining): 5 mm compact board (phenolic resin). Directly used as the liner and baffle. Excellent resistance to strong acids, bases, and organic solvents; also flame-retardant.
  • Baffle system: Three-stage guide-flow exhaust built into the compact board, working with bypass airflow to maintain stable face velocity.
Structure LayerMaterial SpecificationKey Performance Attribute
Exterior (Layer 1)

1.2mm Cold-Rolled Steel (SPCCT)

80µm Epoxy Powder Coating for anti-rust

Support (Layer 2)

60×40×2.0mm Galvanized Steel Tubes

High-rigidity internal skeleton for heavy loads

Interior (Layer 3)

5mm Compact Phenolic Resin Board

Acid/alkali resistance with < 1% water absorption

Designed for Safety & Daily Usability

The walk-in design focuses on flexibility for industrial R&D and pilot plant applications.

  • Large Walk‑in Opening: 1600 mm maximum opening height. Load pallets, tall reactors or bulky instruments directly onto the worksurface without squeezing through a small sash.
  • Door Versatility: Available with sliding door or folding door to suit your lab layout. Sliding door saves external space; folding door allows full access for large equipment.
  • Control & Monitoring: LCD / LED display with start/stop for exhaust fan, light and purge functions. Leakage protector and circuit overload / short‑circuit protection installed.
  • Removable Panels: Front panel, side panels and interior cover plates are removable for easy access to plumbing and electrical wiring.
  • Water-Free Design: Units ship without water fixtures to allow custom utility layouts.
  • By-Pass Airflow: A three-stage guide-flow exhaust prevents air turbulence inside the chamber.
  • Ergonomic Air Foil: Aerodynamic openings at the base ensure smooth air entry into the cabinet.

Walk in Fume Hood Advantages

1) The main columns on both sides are designed with diagonal angles, allowing air to flow smoothly into the interior of the fume hood. The functional modules are all removable （no screws needed) which are easy for installation and maintenance. There is a microcomputer LCD display which has functions such as operating lighting, electric control valves, and fans; Provide 6 spare function holes;

2) The fume hood has a convenient automatic limit function. At the same time, the handle conforms to the principle of airflow and has no dead corners, allowing air to smoothly enter the cabinet.

3) The load-bearing frame is made by 40 * 60 * 2.0 mm square tubes; There are 4 universal sockets (13A）on the front panel, certified by 3C; Equipped with circuit overload and short circuit protection devices; Reserve water and electricity channels for easy installation of water, power, gas, etc.

4) Window: special shape aluminum, can be stopped at any position; Specially made 6mm tempered explosion-proof glass, sliding up and down smoothly without any sound (≤ 1kgf to lift), meanwhile the glass window bearing 150kg without breaking.

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Walk in Fume Cupboard Parameters

These specifications provide the dimensional data required for laboratory facility planning.

ParameterZHF-W
External DimensionsW1800×D900×H2350 mm
Internal DimensionsW1550*D760*H1780mm
Max. Opening Height1600mm
Exhaust Air Rate1395 m³/h
Face Velocity0.5 m/s (adjustable)
MaterialTriple-layer construction (see below)
WorksurfaceNone (walk-in, floor or customer cart)
Lighting30W
WaterNot included
Sockets4× universal (13A)
Control SystemLCD display
Note: The width listed above is standard option. Custom widths are available upon request. Please contact us for your specific requirement.

Walk in Fume Hood Details

Walk in fume hood inner:

Made by 5mm compact board; Three stage guide flow exhaust design, with a thickness of 5mm, resistant to acid and alkali corrosion, fire retardant and smooth; Density greater than 1.45g/cm3, test method according to GB/T 17657-2013, tensile strength greater than 74Mpa, 24-hour water absorption rate less than 1%, surface resistance to dry and wet heat up to level 5, surface resistance to cigarette combustion performance up to level 5, horizontal and vertical stability at 70 degrees Celsius within 24 hours less than -0.13%, impact resistance test results show no surface damage, static bending strength not less than 115Mpa;

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fume hood body

Walk in fume hood body:

he steel part is made of 1.2mm high-quality cold-rolled steel plate (SPCCT), which is laser cut, CNC bent, high-frequency automatic welding. The surface undergoes eleven processes including oil removal, rust removal, phosphating, etc. It is treated with high-temperature curing and anti-corrosion (Akzo Nobel epoxy resin powder), with a coating thickness of 80μm; It has good flexibility, strong load-bearing capacity, strong impact resistance, and is not easily rusted even when exposed to air for a long time. It is durable and has good fire and corrosion resistance.

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Walk-in Chemical Fume Hood Applications

ZH Lab walk‑in fume hoods are widely used in:

  • Pilot plants and kilo‑lab scale chemical synthesis
  • Pharmaceutical R&D and industrial laboratories
  • Chemical manufacturing plants handling large quantities of solvents
  • Academic teaching labs where large apparatus needs to be set up inside the hood

Our walk in fume hoods are designed to provide the necessary personal protection for a wide range of general chemistry applications involving fumes and vapors. They are compliant with the SEFA-1 standard for low-velocity, high-performance hoods and can be safely operated at velocities as low as 0.3m/s (60 fpm).

The base stand also can be flammable cabinet, this kind of hood is called explosion proof fume hood. It is modified to eliminate spark potential outside the fume hood, and consequently reduce the chances of igniting a flammable atmosphere. They are not designed to contain explosions.

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Need a walk-in fume hood for your specific laboratory layout? Tell us your width (1800 mm or others), material preference and any custom requirement. ZH Lab supplies directly to laboratories, universities and industrial facilities worldwide.

Walk-in Fume Hood Installation

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Walk in Fume Hood FAQ:

No. This fume hood is supplied without water as standard, giving you full flexibility to customize the utility arrangement.

1600 mm. That is the clear height you can work with when the sash is fully raised.

Exterior: 1.0 mm cold-rolled steel + epoxy coating. Middle: 60×40×1.2 mm galvanized steel frame. Interior: 5 mm compact board for acid/alkali resistance.

No. The walk-in design uses the floor or a customer-provided mobile cart for placing large equipment.

Sliding door or folding door.

Yes. We can provide installation guidance or on-site support upon request.

Please contact our sales team for current lead times.