Unicorn 10T — Mushroom Grain Spawn Bag (Medium)

The Unicorn 10T is the workhorse grain spawn bag — and for most growers running regular batches, it's the one they end up sticking with. At up to 1.8kg per bag you get more spawn per run with fewer bags to seal, load, and shake out. The same 0.2 micron T filter as the 4T, scaled up. Made in the USA since 1990 by Unicorn Bags LLC, the industry's most trusted name in mushroom cultivation bags.

Specifications

• Filter: 0.2 micron T filter — tight filtration that keeps contamination pressure low through the full colonisation period
• Capacity: Up to 1.8kg of grain
• Size: 5" × 4" × 18"
• Material: 3.0 mil polypropylene — autoclave and pressure cooker safe at 121°C / 15 PSI
• Side-gusseted, reinforced bottom seal

Why growers choose the 10T

• The most popular grain spawn bag size in the Unicorn range — fewer bags per batch means less handling, faster workflow
• Same trusted 0.2 micron T filter as the 4T with up to 80% more grain capacity per bag
• Handles full autoclave cycles at this weight without seal failure or warping
• The bag we use for our own grain spawn production — we've run thousands of these since 2021

Need a smaller bag for tighter batches? The 4T holds up to 1kg. Scaling up? The 3T (up to 3kg) and XLST (up to 6.8kg) carry more grain per bag.

Need substrate bags instead? See our fruiting bag range.

In stock at our Glasgow warehouse. Dispatched same or next day.