− Decrease quantity for Air Cleaners, Air Box, Siamese Stack, Carbon Fiber, Filter Element Top, 18 13/16 in.Long, 13 3/4 in. Wide, 4 1/8 in. Tall, Cotton Gauze, Red, Kit Quantity + Increase quantity for Air Cleaners, Air Box, Siamese Stack, Carbon Fiber, Filter Element Top, 18 13/16 in.Long, 13 3/4 in. Wide, 4 1/8 in. Tall, Cotton Gauze, Red, Kit Add to cart