Laminar Flow Hood H13 HEPA Filter for Mycology Supplies Clean Room, Mushroom Room, Cleanliness Laboratory Replacement Filter for CW-12 & CW-13 Fan Filter Unit

So do you need a customized size to fit your laminar flow hood? The following is for your reference. This filter seems to be used as a replacement filter for their laminar flow hood. https://www.amazon.com/Mycology-Supplies-Cleanliness-Laboratory-Replacement/dp/B0GTTW63WW/