Rice Hulls are used as a filtration aid when mashing and sparging all-grain beers. They are mostly used when mashing wheat beers, oat beers, rye beers or or beers with "gummy" components, like pumpkin beers, beers with flaked grains, etc. But they can be used on any beer and many people add them into all of their mashes just to ensure a better sparge. Use 4 ounces to 16 ounces per 5 gallon mash.
Rice Hulls on this page are sold BY THE OUNCE.
1 pound = 16 ounces
1.25 pounds = 20 ounces
1.5 pounds = 24 ounces
1.75 pounds = 28 ounces
2 pounds = 32 ounces
or go here for a conversion page if you have larger amounts.