PREMIUM CARBON FILTER: Interior and exterior mesh construction provides 53% open area for free air flow. Item comes fully assembled with easy on/off pre-filter and reversible flange.
SUPERIOR CARBON QUALITY: 1050+ RC 48 carbon uses ultra-high surface area to increase air flow; Dimension:4'' x 14''
STURDY DUCTING+ 2 Stainless Clamps: Strong, flexible steel wire supports heavy duty triple layer duct walls. PET core is sandwiched in layers of fire-retardant aluminum that can handle temperatures from -22 to 266 Fahrenheit.