---
product_id: 296323328
title: "60-Pack Large 8\"x5\"x20\" Autoclavable Mushroom Grow Bags Bulk with Microporous Filter Patchs, Extra Thick 80 Micron (=3 Mil), Mushroom Cultivation Spawn Supply Myco Bag Bulk Substrate Bags"
brand: "tongass"
price: "$113.79"
currency: USD
in_stock: true
reviews_count: 11
category: "Ton Gass"
url: https://www.desertcart.us/products/296323328-60-pack-large-8x5x20-autoclavable-mushroom-grow-bags-bulk-microporous
store_origin: US
region: United States of America
---

# Autoclavable up to 121°C 0.2 micron microporous filter Extra thick 80 micron plastic 60-Pack Large 8"x5"x20" Autoclavable Mushroom Grow Bags Bulk with Microporous Filter Patchs, Extra Thick 80 Micron (=3 Mil), Mushroom Cultivation Spawn Supply Myco Bag Bulk Substrate Bags

**Brand:** tongass
**Price:** $113.79
**Availability:** ✅ In Stock

## Summary

> 🍄 Grow like a myco-master with TonGass — sterile, sturdy, and seriously spacious!

## Quick Answers

- **What is this?** 60-Pack Large 8"x5"x20" Autoclavable Mushroom Grow Bags Bulk with Microporous Filter Patchs, Extra Thick 80 Micron (=3 Mil), Mushroom Cultivation Spawn Supply Myco Bag Bulk Substrate Bags by tongass
- **How much does it cost?** $113.79 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/296323328-60-pack-large-8x5x20-autoclavable-mushroom-grow-bags-bulk-microporous)

## Best For

- tongass enthusiasts

## Why This Product

- Trusted tongass brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Breathe Easy 🌬️:** Microporous 0.2 micron filter patches allow optimal gas exchange while blocking contaminants.
- • **Bulk Value Pack 💼:** 60 bags per set means you’re fully stocked to scale your mycology projects effortlessly.
- • **Built to Last 🛡️:** Durable 6mm thick plastic resists tears and punctures for reliable mushroom cultivation.
- • **Space-Smart Size 📏:** Generous 8"x5"x20" dimensions maximize substrate volume without wasting room.
- • **Sterilize Like a Pro 🔥:** Withstands intense pressure cooker heat without melting or warping.

## Overview

TonGass 60-Pack Large Mushroom Grow Bags are autoclavable, extra thick 80 micron plastic bags with 0.2 micron microporous filter patches designed for professional-grade mushroom cultivation. Each 8"x5"x20" bag offers ample space for substrate, resists tears, and supports sterile gas exchange, making them ideal for both hobbyists and serious mycologists looking to scale up their spawn production with confidence.

## Description

Buy TonGass 60-Pack Large 8"x5"x20" Autoclavable Mushroom Grow Bags Bulk with Microporous Filter Patchs, Extra Thick 80 Micron (=3 Mil), Mushroom Cultivation Spawn Supply Myco Bag Bulk Substrate Bags: Mushrooms - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Great bag that can withstand high heat! - worked as intended, did not melt or burn inside the pressure cooker for 3.5 hours. I highly recommend if you;re growing mushrooms, sterilizing anything. Plus there were 66 bags in the package! Which is a bonus. highly recommend to mycologists enthusiasts, it's a solid bag. Comes with the white filter only. If you need to inject anything in it you need to puncture the bag and then tape it. Or you can buy the self healing sticker. Highly recommend it!
Review: Work Great if Used Correctly - These mushroom bags work great but they will burst in the PC if proper precautions are not taken. First, they cannot come into contact with the bottom or sides of your pressure cooker (PC). The PC will get very hot and it will melt the plastic. I place metal canning rings under the canning rack and then drape cloth over the rim of the PC arranged so that the interior is completely lined with cloth. Then I load the bags and then fold the cloth over top of the bags to clear the rim of the PC once loaded. Second, you cannot have any air in your bags or they will pop. The air expands under pressure — a lot! — and the filter patch does not provide enough ventilation to allow excess air to escape. The bags will then pop, and you will probably hear it. There are a couple of ways to prevent this. One is to not seal the bags until after they are PCed. This does complicate sealing the bags because the PC will wrinkle and distort the plastic. It is also not foolproof because if the bags are rolled tightly closed as per common practice then they could burst anyway. The safest way to prevent air from bursting your bags is to just not have any. Push all the excess air out of the bag so they look like they are vacuum sealed (which btw is impossible with these bags because of the filter patch). . Once all the air is out of the bag you can seal them and PC or else PC first as per your preference. I personally like to seal the bags before pressure cooking because they seal better, and I can verify that the excess air is fully removed before they go into the PC. If the air is not removed then you will observe a noticeable pillow of air inside when you try to roll them up. I seal my bags as close to the top as possible so that if necessary I can open the seal, remove the excess air, and still have enough head room to reseal the bag. If you follow these precautions then you can avoid bursting your bags on the regular.

## Features

- Autoclavable Mushroom Bags: These bags are designed to withstand high temperatures for sterilizing the substrate.
- Large Size: The 8" x 5" x 20" size saves space while providing enough room for growing mushrooms.
- Durable and Tear-Resistant: Thick 6mm plastic bags are stronger and more durable than average mushroom grow bags.
- Effective Filter Patches: The 0.2 micron filter patches allow gas exchange without letting contaminants in.
- Value-Pack: Get 60 bags for the same price, allowing you to grow or spawn mushrooms like a pro.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08P2RWZXF |
| Best Sellers Rank | #13,055 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #36 in Plant Grow Bags |
| Brand | TonGass |
| Color | Clear |
| Customer Reviews | 4.4 4.4 out of 5 stars (462) |
| Date First Available | November 24, 2020 |
| Finish Type | Unfinished |
| Indoor/Outdoor Usage | Indoor, Outdoor |
| Item Weight | 1 pounds |
| Manufacturer | TonGass |
| Material | Plastic, Polycarbonate (PC), Polyethylene (PE) |
| Mounting Type | Floor Standing |
| Number of Levels | 1 |
| Number of Pieces | 60 |
| Pattern | Solid |
| Planter Form | Bag |
| Product Dimensions | 20"D x 8"W x 5"H |
| Shape | Rectangular |
| Size | 8*5*20"-60pk |
| Special Feature | Durable |
| Style | Modern |
| UPC | 687368345181 |

## Product Details

- **Color:** Clear
- **Material:** Plastic, Polycarbonate (PC), Polyethylene (PE)
- **Planter Form:** Bag
- **Special Feature:** Durable
- **Style:** Modern

## Images

![60-Pack Large 8"x5"x20" Autoclavable Mushroom Grow Bags Bulk with Microporous Filter Patchs, Extra Thick 80 Micron (=3 Mil), Mushroom Cultivation Spawn Supply Myco Bag Bulk Substrate Bags - Image 1](https://m.media-amazon.com/images/I/81TtVGq+4CL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Your listing says the bags are 6mm thick. That's almost a quarter of an inch. Is that really the thickness?**
A: Hello, the thickness is 80 microns （ca. 0.0031496 inchs） by contacting the supplier. We have re-edited the data and it will be updated in about 15 minutes. Thank you very much for your understanding and Suggestions.

**Q: How much spawn does each bag hold in pounds of spawn?**
A: For bags of this size, typically 5-8, but the plastic is thick so it may be able to hold more weight at your own risk.

**Q: how many pound bag is this?**
A: they weigh like 16g

**Q: Why don’t these bags have injection ports?**
A: because the manufacturer did not install injection ports.
you dont need an injection port anyways.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great bag that can withstand high heat!
*by O***E on April 23, 2025*

worked as intended, did not melt or burn inside the pressure cooker for 3.5 hours. I highly recommend if you;re growing mushrooms, sterilizing anything. Plus there were 66 bags in the package! Which is a bonus. highly recommend to mycologists enthusiasts, it's a solid bag. Comes with the white filter only. If you need to inject anything in it you need to puncture the bag and then tape it. Or you can buy the self healing sticker. Highly recommend it!

### ⭐⭐⭐⭐⭐ Work Great if Used Correctly
*by D***K on January 16, 2022*

These mushroom bags work great but they will burst in the PC if proper precautions are not taken. First, they cannot come into contact with the bottom or sides of your pressure cooker (PC). The PC will get very hot and it will melt the plastic. I place metal canning rings under the canning rack and then drape cloth over the rim of the PC arranged so that the interior is completely lined with cloth. Then I load the bags and then fold the cloth over top of the bags to clear the rim of the PC once loaded. Second, you cannot have any air in your bags or they will pop. The air expands under pressure — a lot! — and the filter patch does not provide enough ventilation to allow excess air to escape. The bags will then pop, and you will probably hear it. There are a couple of ways to prevent this. One is to not seal the bags until after they are PCed. This does complicate sealing the bags because the PC will wrinkle and distort the plastic. It is also not foolproof because if the bags are rolled tightly closed as per common practice then they could burst anyway. The safest way to prevent air from bursting your bags is to just not have any. Push all the excess air out of the bag so they look like they are vacuum sealed (which btw is impossible with these bags because of the filter patch). . Once all the air is out of the bag you can seal them and PC or else PC first as per your preference. I personally like to seal the bags before pressure cooking because they seal better, and I can verify that the excess air is fully removed before they go into the PC. If the air is not removed then you will observe a noticeable pillow of air inside when you try to roll them up. I seal my bags as close to the top as possible so that if necessary I can open the seal, remove the excess air, and still have enough head room to reseal the bag. If you follow these precautions then you can avoid bursting your bags on the regular.

### ⭐⭐⭐⭐⭐ Integrity/Withstanding Heat/Metal Contact wasn't an issue
*by E***E on April 25, 2025*

I was afraid it would bust in the pressure cooker or melt in contact to metal like some of the other reviews were talking about but I had no issues whatsoever. Great quality, if I ever run out of the pack I'll probably be coming right back Also important side tip, watch some tutorials online for exactly how to position the bags because they can inflate and block pressure release if they arent positioned right. This wasnt an issue with the bags this was an issue with me putting them in willy nilly. Dont also forget to buy those self-healing injection ports yourself with the order as those do not come with this bag or most others I've seen for sale

## Frequently Bought Together

- TonGass 60-Pack Autoclavable Mushroom Growing Bag Bulk with Microporous Filter Patchs - Large 8"x5"x20" Extra Thick 80 Micron (=3 Mil)| Mushroom Cultivation Spawn Supply Myco Bag Bulk Substrate Bags
- Myco Labs Microppose Self Healing Injection Ports for Mushroom Spawn Bags and Jar Lids (50-Pack)
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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-14*