Item Description Unicorn 14-A ideal for standard grow blocks These bags are 2.2 mil in thickness and offer the same high-quality 1.5” x 1.5” 0.5 micron filter. These are great for standard growth blocks as your test new varieties, or you are just starting out. They are sized to fit 5-7 lbs of substrate. Yes, these Unicorn bags are still the original brand made in the USA to the high-quality standards Unicorn bags are known for. You can even save more time with MushroomMediaOnline’s own Fast Fruiting Mix that is the ideal mix of 50/50 hardwood sawdust substrate supplemented with 50% soy hulls. All of our Unicorn bags are Polypropylene which means they are autoclavable. Free shipping with your bag purchase from MushroomMediaOnline.com We offer the lowest cost per bag by finding the very best shipping rates for your bag delivery. The larger your order size, the more you can save. Choose your purchase size and see the full price with free shipping included. Brand: Unicorn Model Number: 14-A Bag Size: 8″ x 5″ x 19 Filter Size: 1.5” x 1.5” 0.5 micron Typical Block Size: 5-7 lbs Material: 2.2 Mil Polypropylene DIRECTLY FROM UNICORN BAG’S WEBSITE: Please note that the images of our bags shown on this website include a Unicorn logo for copyright reasons. The bags you receive will not have that logo printed on them.Shipping Items are shipped 1-2 days to lower 48 after payment has been received. Alaska, Hawaii, Canada and shipping is more. PaymentPaypal accepted Contact UsAsk a question Please do not hesitate to ask if you have any questions