---
product_id: 540868695
title: "50 Pack, Mushroom Grow Bags, Heavy Duty 6 Mil Polypropylene Mushroom Substrate Bags, Large Size 8\" X 5\" X 20\" for Mushroom Cultivation, Spawn Bags, and Sawdust Fruiting Blocks"
brand: "gymgit"
price: "A$166"
currency: AUD
in_stock: true
url: https://www.desertcart.com.au/products/540868695-50-pack-mushroom-grow-bags-heavy-duty-6-mil-polypropylene
store_origin: AU
region: Australia
---

# Large 8"x5"x20" Gusseted Design 0.2 Micron Breathable Filter 6 Mil Heavy-Duty Polypropylene 50 Pack, Mushroom Grow Bags, Heavy Duty 6 Mil Polypropylene Mushroom Substrate Bags, Large Size 8" X 5" X 20" for Mushroom Cultivation, Spawn Bags, and Sawdust Fruiting Blocks

**Brand:** gymgit
**Price:** A$166
**Availability:** ✅ In Stock

## Summary

> 🍄 Grow Like a Pro, Bagged to Perfection!

## Quick Answers

- **What is this?** 50 Pack, Mushroom Grow Bags, Heavy Duty 6 Mil Polypropylene Mushroom Substrate Bags, Large Size 8" X 5" X 20" for Mushroom Cultivation, Spawn Bags, and Sawdust Fruiting Blocks by gymgit
- **How much does it cost?** A$166 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/540868695-50-pack-mushroom-grow-bags-heavy-duty-6-mil-polypropylene)

## Best For

- gymgit enthusiasts

## Why This Product

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

## Key Features

- • **Room to Thrive:** Generous 8"x5"x20" gusseted bags stand upright and offer ample space for substrate, spawn, and fruiting blocks.
- • **Sterile & Durable Shield:** Premium 6 Mil polypropylene ensures no tears or holes post-autoclave, keeping your spawn contamination-free.
- • **Breathe Easy, Grow Better:** 0.2 micron filter blocks airborne contaminants while providing optimal fresh air for vigorous mycelium growth.
- • **Bulk Pack for Serious Growers:** 50 premium bags per pack to fuel your mushroom projects, school experiments, or commercial farming ambitions.
- • **Versatile Cultivation Partner:** Perfect for oyster mushrooms, Ganoderma, bamboo fungus, and more—ideal for hobbyists and professional growers alike.

## Overview

Gymgit 50 Pack Mushroom Grow Bags are heavy-duty, food-safe polypropylene bags featuring a 0.2 micron breathable filter and a large gusseted design (8"x5"x20") that ensures contamination-free, optimal air exchange for robust mushroom cultivation. Ideal for both hobbyists and professionals, these 50 durable bags stand upright and accommodate various mushroom species and substrates.

## Description

50 Pack, Mushroom Grow Bags, Heavy Duty 6 Mil Polypropylene Mushroom Substrate Bags, Large Size 8" X 5" X 20" for Mushroom Cultivation, Spawn Bags, and Sawdust Fruiting Blocks

## Features

- 11

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Gymgit |
| Model Number | 50Pcs Mushroom Bags |
| Color | Clear |
| Product Dimensions | 20.32 x 50.8 x 12.7 cm; 453.59 g |
| Capacity | 8 Pounds |
| Material | Polypropylene (PP) |
| Special Features | Bagged |
| Item Weight | 454 g |

## Product Details

- **Material:** Polypropylene (PP)
- **Colour:** Clear
- **Special features:** Bagged
- **Style:** Antique
- **Planter form:** Bag

## Images

![50 Pack, Mushroom Grow Bags, Heavy Duty 6 Mil Polypropylene Mushroom Substrate Bags, Large Size 8" X 5" X 20" for Mushroom Cultivation, Spawn Bags, and Sawdust Fruiting Blocks - Image 1](https://m.media-amazon.com/images/I/718hcguRouL.jpg)

## Available Options

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

## Questions & Answers

**Q: How can I seal the bag without an impulse sealer?**
A: I use a vacuum sealer, without the vacuum.

**Q: Can this bag be autoclaved or put in a pressure cooker?**
A: Yes. I just ran four bags through the pressure cooker this week and they all came out in perfect condition.

**Q: Where do i inject i thought i could go through the filter but that doesnt seem like a good idea. Can i tape over my holes?**
A: i would buy some injection ports, tape them onto hte bag, and inject through that, otherwise you'll leave an opening on your bag and that's going to be a source of contamination. I bought 100 filter injection ports on amazon for like 9 bucks, and i just tape them to the exterior of my bags that dont come with their own ports, and inject through that. You'll have a much better success rate, if you leave any kind of opening you can expect that 40% of your bags (or more, depending on your conditions) will contaminate. Never inject directly through the plastic.

## Frequently Bought Together

- Gymgit 50 Pack, Mushroom Grow Bags, Heavy Duty 6 Mil Polypropylene Mushroom Substrate Bags, Large Size 8" X 5" X 20" for Mushroom Cultivation, Spawn Bags, and Sawdust Fruiting Blocks
- Myco Labs Microppose Self Healing Injection Ports for Mushroom Spawn Bags and Jar Lids (50-Pack)
- Impulse Heat Sealer Machine Manual Bags, 12 Inch, for Sealing Plastic/PE PP Bags with Extra Replace Element Grip

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.com.au/products/540868695-50-pack-mushroom-grow-bags-heavy-duty-6-mil-polypropylene](https://www.desertcart.com.au/products/540868695-50-pack-mushroom-grow-bags-heavy-duty-6-mil-polypropylene)

---

*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-03-08*