Dr. Myc 2.5" Adhesive Monotub Filters

Non-woven, high-airflow Monotub Filters - 2.75" to fit 2.5" Monotub Holes, such as those on North Spore 'Boomr Bin' and Max Yield Bins

The 2.5" Adhesive Monotub Filters are designed to cover standard 2-inch monotub holes, offering a fast, reliable solution for maintaining passive airflow and high humidity in mushroom fruiting chambers. These filters simplify your setup while supporting consistent, clean conditions for colonization and fruiting.

Made from high-permeability filter media and backed with a strong adhesive layer, they install in seconds—no stuffing, taping, or extra tools required. Just peel, stick, and grow.

Each pack contains (24) 2.5" Adhesive Monotub Filters. 

Why Choose 2.5" Adhesive Monotub Filters?

Utilizes high-quality 3M adhesive - and is coated with a hydrophobic coating to ensure more humidity stays inside your Monotub

E-Beam sterilized - a costly add-on than ensures all filters are sterile upon arrival to you

Securely stuck onto backing plate - meaning they are safe from contamination, unlike other brands

Supports Passive Airflow – Maintains fresh air exchange while helping retain humidity for ideal fruiting conditions.

Faster Than Polyfill – No mess, no prep—just peel and press for a tight seal.

Sized for 2” Tub Holes – Covers standard ports with clean overlap and a secure fit.

Reliable in Humid Environments – Stays adhered through full grow cycles without sagging or peeling.

Reusable with Care – Peel off gently and reuse across multiple tubs when handled properly.

Fits Standard Monotub Ports

Each filter measures 2.5" in diameter, providing full coverage for 2" airflow holes commonly used in monotubs and modified fruiting bins. The filter material offers a balance of gas exchange and moisture retention to keep your microclimate dialed in.

Quick Application with Adhesive Backing

These filters feature a built-in adhesive layer for quick installation. No tape or glue needed—just press onto a clean, dry surface and move on to the next.

Made for Fruiting Conditions

Designed to hold up in high-humidity environments, these filters stick securely throughout colonization and fruiting. Many growers reuse them across cycles by carefully removing and storing between uses.