This 7 micron grade Filter Pad is recommended for most uses, as it is less likely to clog halfway through the 5 gallon batch if there is excessive yeast in the beer. This grade will filter 5 gallons of beer that has fallen clear, but still has some yeast in suspension. These are disposable - you will need two pads per 5 gallon batch of beer. 8.75" in diameter to fit our Q73 Plate Filter. Made in the USA by Gusmer.