Active Air Inline Carbon Filter 8 x 30 in | 750 CFM, 1 in Carbon Bed

Sizing an 8 Inch Inline Carbon Filter to a Real Room

Flow is rated at 750 CFM, and the collars measure 8 in at each end of a nominal 8 x 30 in body. Carbon is packed 1 in deep, with air crossing the bed on the way in and again on the way out. The unit carries 26.02 lb before any duct weight joins it, in a 14.7 x 14.7 x 38.0 in carton. Part number reads ACCIF308, barcode 638104020787. Because the shell is solid rather than meshed, intake happens through the collar instead of the skin. Either collar can be the inlet. That weight is the number worth planning for. A body this size hanging off thin duct will sag the run and pull the seal open at the joint. It wants a strap or a shelf of its own. Put the support under the body and let the duct meet it unloaded. A hanger on each end of the cylinder spreads the load better than a single strap in the middle.

Working Back From Air Changes Per Hour

Room sizing is arithmetic first. Multiply length by width by height for cubic feet, then pick how often that volume should turn over. A sealed flowering room usually wants it quickly and a veg room less so. The filter rating has to meet or beat whatever the fan delivers. Undersize the carbon against the fan and air shoves past the bed with too little dwell to strip the odor. Oversize it and you pay for capacity the room never asks for. The mid-duct position is also a pressure-drop question. Every bend and every foot of flex between fan and body costs static pressure. A short straight approach is worth more than extra capacity on a tortured run. Carbon absorbs humidity as readily as it absorbs odor, which is the quiet reason a filter in a damp corner dies early. Keep the body in conditioned air if the layout allows it. The trade-off with this format is service access, since a unit mounted in a ceiling void takes two people to swap. Decide on the swap route while the ducting is still loose and the job stays a half-hour job.

Key Features

• 750 CFM rating: Sized for an 8 in fan and a room that needs real turnover, not a cabinet.
• Solid shell, inline body: Air enters through the collar rather than the skin, so the unit can live outside the room.
• 1 in carbon bed, two passes: Air crosses the carbon entering and leaving, which stretches contact time per pass.
• Either collar as inlet: Orientation stops being a problem when the duct run is already fixed in place.
• Known weight for planning: At 26.02 lb the body needs its own support rather than hanging on the ducting.

Technical Specifications