Ducted Laboratory Fume Hoods for Safe & Controlled Exhaust Ventilation
Ducted fume hoods are engineered to provide reliable containment of hazardous vapors, chemicals, gases, and particulates through dedicated exhaust systems. Designed for high-performance laboratories that require strict air-quality control, these hoods align with UL 1805, SEFA 1, NFPA 45, ANSI/AIHA Z9.5, and ANSI/ASHRAE 110 performance guidelines. For applications requiring personnel and environmental protectionโas opposed to chemical vapor containmentโexplore our Biological Safety Cabinets.
These systems incorporate high-efficiency exhaust blowers, robust construction, and ergonomic design. Available widths typically range from 48 to 96 inches, with walk-in configurations available for larger applications. Face velocities generally fall between 50 and 125 ft/min depending on sash position and airflow control strategy.
Ideal for chemistry, pharmaceutical, clinical, and educational environments, ducted hoods integrate directly into a facilityโs exhaust infrastructure and support both constant-air-volume (CAV) and variable-air-volume (VAV) systems for stable, energy-efficient performance.
Key Selection Factors for Ducted Fume Hoods
- Exhaust Configuration & Ducting: Confirm whether 100% exhaust or partial recirculation meets your safety codes and chemical requirements.
- Face Velocity & Sash Design: Ensure proper containment with recommended face velocities (commonly 80โ100 ft/min) and ergonomic sash heights for safe operation.
- Construction Materials: Select interior liners and work surfaces that match your chemical resistance needs, durability expectations, and cleaning procedures.
- Energy Efficiency & VAV Compatibility: Consider hoods designed for low-flow or VAV operation to reduce building exhaust loads and energy consumption.
- Serviceability & Certification: Verify access for blower service, duct connections, filter checks, and annual certification to maintain compliance.
- Facility Integration: Account for hood depth, utility connections (gas, vacuum, electrical), airflow monitors, and compatibility with your buildingโs exhaust system.
Frequently Asked Questions About Ducted Fume Hoods
What is a ducted fume hood and when should it be used?
A ducted fume hood removes hazardous fumes by exhausting air directly outdoors. It is the preferred choice for work involving volatile chemicals, toxic gases, or procedures requiring stable and continuous airflow management.
How do I choose the right face velocity and sash height?
Standard chemical applications typically require 80โ100 ft/min face velocity. Correct sash height ensures proper containment without causing turbulence or user strain.
What energy-saving features should I look for?
Consider hoods compatible with VAV systems, high-efficiency blowers, low-flow designs, and systems that reduce exhaust volume when the sash is closed or idle.
How often does a ducted fume hood require certification?
Certification is recommended at installation, after any relocation or repair, and annually. Tests typically include airflow measurements, containment evaluations, and face velocity verification.
Can an existing ducted hood be upgraded for low-flow or VAV operation?
Many systems can be retrofitted with VAV controls, improved blowers, or optimized bypass designs to support low-flow operation. Compatibility depends on hood design and facility infrastructure.
Air Sentryยฎ High-Performance Laboratory Fume Hood
Quoteโข Complies with UL 1805, SEFA 1, NFPA 45, ANSI/AIHA Z9.5.
โข Tested to the ANSI/ASHRAE 110 performance standard.
โข Operating average face velocity range of 50 FPM โ 125 FPM.
โข Powder-coated paint finish available in a variety of colors...
Air Sentryยฎ V3 Low Flow Laboratory Fume Hood
Quoteโข Complies with UL 1805, SEFA 1, NFPA 45, ANSI/AIHA Z9.5
โข Tested to the ANSI/ASHRAE 110 performance standard
โข Operating average face velocity range of 60 FPM โ 125 FPM through restricted sash opening of โค 20โ
โข Full height sash openin...