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Monotub Adhesive Filter Disks (6-Pack)

Availability: In Stock
Usually ships In 1 Day
Item #: FD4
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5.00 stars, based on 27 27 review(s). | Write a review
Retail: $9.99
$2.00
Price: $7.99
You Save: $2.00 (20.0%)

    (NEW!) Take the guess work out of the air exchange equation with our new Polyfil filter disks. Constructed from a durable 2.25" plastic ring and 3M adhesive back, these disks have the perfect flow rate and density to allow the right amount of air exchange for monotubs or any bulk casing style grow. They keep humidity in and allow for the high levels of air exchange needed for any tub or greenhouse. Simply peel and stick over any size hole up to 2.0" diameter. Can also be re-used!

    Features & Includes:

    • 6 Polyfil filter disks
    • 2.25" diameter disk
    • Covers holes up to 2.0" diameter
    • Installs in seconds to any plastic container or Greenhouse!
    • Custom manufactured to our specs!
    • Filters and regulates air exchange
    • Reusable!

    Customers Also Bought (check to add to cart)

    (NEW! Version 2.0) Take the guess work out of the air exchange equation with our newly designed Polyfil filter disks. Constructed from a durable plastic ring and 3M adhesive back, these disks have the perfect flow rate and density to allow the right amount of air exchange for monotubs or any bulk casing style grow. They keep humidity in and allow for the high levels of air exchange needed for any tub or greenhouse. Simply peel and stick over any size hole up to 2.0" diameter. Can also be re-used!

    Features & Includes:

      • 6 Polyfil filter disks
      • 2.25" diameter disk
      • Covers holes up to 2.0" diameter
      • Installs in seconds to any plastic container or Greenhouse!
      • Custom manufactured to our specs!
      • Filters and regulates air exchange
      • Reusable!

    Clean & Reuse over and over with 3% Peroxide! 

      Overall Customer Rating of 27 Reviews:
      review-star review-star review-star review-star review-star

      Great product

      Rating:
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      Pros:
      Cons:
      Great value and fast shipping..

      MI

      Stick on vent

      Rating:
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      Pros:
      • Nothing to it
      • a baby could do it.
      Cons:
      • Could use more sticky portion.
      I really like these stick-on vents; nice and gf convenient. Only place I could find what I wanted was from Midwest.

      South Dakota

      Great

      Rating:
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      Pros:
      • Durable
      • Thick
      • Breathable
      • Sticky
      Cons:
      These things are great! They are thick and durable and they stick like grim death.

      TX

      Very sticky, very useful

      Rating:
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      Pros:
      Cons:
      When making or using tubs or anything else that requires oxygen and carbon dioxide flow, these patches are the best.

      Is it too simple?? LOL

      Rating:
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      Pros:
      Cons:
      This was the 3rd time ordering from Midwest and it's all been excellent.Love these disks! So easy