How many grill cloth do you need during you build speaker cabinet Saving your money , Buying grill cloth only according to you need size 18"x36" -perfect for small combos or #guitarhead units 24"x36" -for larger combos or #loudspeaker cabinets 36"x36" -big enough for most 4x12 #guitarcabinets · 18"x36" -perfect for small combos or head units · 24"x36" -for larger combos or speaker cabinets · 36"x36" -big enough for most 4x12 cabinets · 48"x36" -for those "taller" cabinets · 54"x36" -"taller" still · 72"x36" -will do a couple of typical 4x12 cabinets http://www.kldguitar.com/KLDguitar-English/KLD%20retail%20zone/KLDguitar-retail-zone-Speaker-Grill-Cloth.html