Infographic: How to Select a Fume Hood Blower

Labconco Blowers

Your fume hood blower is an important component of your lab's ventilation system. Selecting the proper blower is critical to maintaining the safety and containment of your fume hood. Here's what you need to know. 


Choose your material

steel body fume hood blower outline



For low to moderately corrosive applications.

Labconco Fiberglass Blower



More solvent and acid resistant for moderate to highly corrosive applications.

Labconco PVC Blowers



For work with perchloric acid and other extremely corrosive atmospheres.


Tip: Where future applications are unknown, fiberglass is the standard material of choice. When in doubt, choose a blower material that matches the liner of your fume hood and is compatible with your chemistry. 

Size Your Blower

Find the resistance of your fume hood, which is measured as static pressure loss (SP loss). Here are some of the main factors that will change your SP loss.

Fume Hood Manufacturer Provides to You

 Face Velocity Range

 Volumetric Rate

 Static Pressure


You Provide to Fume Hood Manufacturer

 Duct Diameter

 Total Length of Straight Duct Runs

 Number of 90º Elbows

 Number of 45º Elbows

 Type of Weather Cap

 Operating Temperature

 Altitude from Sea Level

Sizing a blower can get complex quick. Our experts are here to help.

Contact an Expert


Step 3  

What Else Do I Need?

Manual Duct Damper

Manual Duct Damper

Zero Pressure Weathercap

Zero Pressure Weathercap

Airflow Monitor

Zero Pressure Weathercap

Your blower selection is a major factor in fume hood containment and performance. We recommend that you reach out to our experts for help to make the right selection. 


Contact an Expert


One of the first important steps in laboratory design and hood installation is to select the proper blower and ductwork. There are several different types of fume hood blowers to select from. 

Select a blower that's designed and manufactured for superior performance and long life when subjected to chemical atmospheres. Blowers are available in sizes that can handle airflow as low as 250 CFM, to blowers that can handle airflow as high as 3500 CFM.

To obtain a greater level of detail, consult the Blowers Catalog for features product data, dimensional drawings and selection guides for all of our blowers. There are three common styles of blowers: Coated Steel, Fiberglass and PVC.

Coated Steel Blowers are recommended for low to moderately corrosive applications, Fiberglass Blowers are used for moderate to highly corrosive conditions, and PVC Blowers are used for perchloric acid and other extremely corrosive atmospheres. Forward curved impellers ensure quiet operation and optimum air delivery.

If you need additional assistance in the selection of blowers, ductwork and accessories, contact a fume hood expert


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