• 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-Engl ... abric.html