Farm Wholesale Greenhouses: your source for hobby greenhouse kits and supplies, utilizing corrugated plastic panels and steel reinforced pvc framing.
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    Ventilation Calculator

    All greenhouses will need ventilation to successfully grow plants and cuttings. How much is enough? What size fan do you need for your greenhouse? Use our JavaScript Greenhouse Ventilation CFM Calculator below to find out what size of fan your greenhouse needs to promote healthy growth. Exhaust or Ventilation fans are rated on how much air is moved in CFM (Cubic Feet per Minute).

    Use the JavaScript Greenhouse Exhaust Fan CFM Calculator to determine your needs:

    JavaScript Greenhouse Exhaust Fan CFM Calculator
    Do This JavaScript Calculator Example
    measure the height of your greenhouse. you measured a floor to ceiling height of 8 feet.
    determine the width of your greenhouse. you measured the width at 8 feet.
    find out the length. you enjoy a medium sized greenhouse, measuring 16 feet long.
    multiple the height by the width by the length. your greenhouse measurements were 8'h, 8'w, and 16'l.
    look for this minimum ventilation fan cfm rating to keep your greenhouse healthy year round. 8' h x 8' w x 16' l = 1024 cfm
    this is the optimum ventilation fan cfm rating many growers use. 8' h x 8' w x 16' l x 1.5 = 1536 cfm

    Our 12" Fan Kit provides 760 CFM. We can also special order larger fans. A 16" fan is rated at 1,250 CFM, and a 20" fan is rated at 3,000 CFM.


    Farm Wholesale Greenhouses
    3740 Brooklake Road NE
    Salem, OR 97303    		 call toll-free (800) 825-1925
    email: greenhouse@farmwholesale.com
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    www.farmwholesale.com