14A Unicorn Bag for Mushroom Substrate (up to 3kg)

The Unicorn 14A is a compact, reliable substrate bag designed for smaller substrate batches and fruiting blocks. It comfortably holds up to 3 kg, making it a practical choice for growers who want tidy, efficient bags without excess size. We use these bags for our 3 kg CVG substrate bags and 2.5 kg hardwood substrate fruiting blocks, and they’re spot-on for that purpose.

•  Size: 8″ × 5″ × 19″ (approx. 20 × 13 × 48 cm)
• Material: Autoclavable polypropylene
• Thickness: Approx. 2.2 mil
• Filter patch: Type-A filter, 0.5 micron, suitable for substrate colonisation
• Ideal use: Substrate preparation & fruiting bags
• Capacity: Up to 3 kg substrate
• Tough bottom seal, it takes the weight without sulking

Built to withstand pressure cooker and autoclave sterilisation, the 14A keeps its structure under heat and offers steady gas exchange appropriate for substrate colonisation, without drying it out or flooding it with more air than it needs.

If you're looking for a larger substrate bag that can hold up to 6.5kg of mushroom substrate, Unicorn XLS-A Horizon is what you want.