3M Micropore Tape (3" x 10 yd)

The breathable tape growers reach for when a seal needs to let air through.

3M Micropore is a white, breathable paper tape. It's porous enough to allow gas exchange but still forms a physical barrier against dust and airborne particles. That makes it a cheap, flexible tool for covering holes, sealing plates that need to breathe, and keeping your setup tidy.

Each roll is 3 inches wide and 10 yards long. The extra width covers jar lid holes and tub holes in a single strip, with fewer seams to fuss over.

Product Details

• Genuine 3M Micropore brand
• 3" wide x 10 yards per roll
• White, breathable paper tape
• Allows gas exchange while helping block airborne particles
• Gentle adhesive that releases cleanly
• Tears easily by hand, with no scissors needed
• Easy to write on for labeling jars, bags, and plates
• Available in money-saving 1, 2, and 4-roll options
• Free shipping

Common Uses

• Covering air-exchange holes on grain jar lids
• Covering fresh air holes on monotubs and grow containers
• Wrapping agar plates when you want the plate to breathe rather than stay sealed airtight
• Patching small holes in bags or tubs
• Labeling with strain, date, and batch notes

Micropore vs. Grafting Film

Grafting film locks moisture in and is best for long-term plate storage. Micropore lets the container breathe, which many growers prefer for actively colonizing plates and jars. Keep both on hand and use the right one for the job.