Unicorn 3T — Mushroom Grain Spawn Bag (Large)

The Unicorn 3T is the large grain spawn bag in the range — built for growers producing spawn in bulk. At up to 3kg of grain per bag you prep far more spawn per run with fewer bags to seal and shake out, while keeping the same tight 0.2 micron T filter that runs through the whole Unicorn spawn line. 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 3kg of grain
• Size: 8" × 5" × 19"
• Material: 3.0 mil polypropylene — autoclave and pressure cooker safe at 121°C / 15 PSI
• Side-gusseted, reinforced bottom seal

Why growers choose the 3T

• More grain per bag than the 4T or 10T — fewer autoclave runs and less handling when you're scaling spawn production
• The same trusted 0.2 micron T filter as the rest of the Unicorn spawn range
• Handles full autoclave cycles at this volume without seal failure or warping
• Ideal for larger labs and commercial growers running big spawn batches

Need smaller bags for tighter batches? We also stock the 4T (up to 1kg) and 10T (up to 1.8kg). Need even more capacity? The XLST is the largest in the range.

Need substrate bags instead? See our fruiting bag range.

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