Charco Filters Plus Activated Carbon Filter - 8 x 40-in - 840 CFM - 8-in Flange

Control Grow Room Odor With Virgin Carbon - 8 x 40-in Filter

Exhaust air from an indoor grow space carries odor that can reach neighbors, hallways and shared walls. This carbon filter pulls that air through a bed of 100% virgin activated carbon, removing up to 99.5% of odors. The 8-in flange arrives pre-installed, so you connect your ducting without extra fittings.

The 8 x 40-in size suits growers running a regular indoor space with 8-in ducting and a matching fan. It is rated for 840 CFM, which gives a mid-to-large room room to move air. Smaller tents may prefer a shorter filter, and commercial rooms often run several filters.

Key Features & Benefits

• Virgin activated coal-based carbon — a fresh carbon bed adsorbs odor molecules from exhaust air.
• Up to 99.5% odor removal — keeps exhaust air far less noticeable outside the grow space.
• Pre-installed 8-in flange — speeds setup and connects directly to 8-in ducting.
• 840 CFM rating — handles the airflow of larger inline fans.
• Heat tolerance up to 180 °F — suits warm exhaust streams.

Who Should Use Charco Filters Plus Activated Carbon Filter

Indoor growers who vent a room through 8-in ducting and want to control odor will find this filter a practical fit. It works for home gardeners and for licensed commercial growers who need a standard-size filter for each exhaust line.

About Charco Filters Plus Activated Carbon Filter

The Charco Filters Plus 8 x 40-in filter is sold each. It uses 100% virgin activated coal-based carbon, has an 8-in flange pre-installed, and is rated for 840 CFM. The listed average lifespan is 1.5 years, and it operates at temperatures up to 180 °F.

Frequently Asked Questions

Q: How long does this carbon filter last?
A: The listed average lifespan is 1.5 years. Actual life depends on air humidity, temperature and how heavy the odor load is. Replace the filter when you notice odor returning.

Q: What size ducting does it connect to?
A: It comes with an 8-in flange pre-installed, so it connects to 8-in ducting. Use a clamp to secure the duct to the flange.

Q: What does CFM mean?
A: CFM stands for cubic feet per minute and measures how much air moves through the filter. This filter is rated for 840 CFM. Pair it with a fan that does not exceed the rating.

Q: Why choose virgin activated carbon?
A: Virgin carbon has not been used or reclaimed, so its pores are fresh and ready to adsorb odor. Reclaimed carbon generally offers less consistent performance.

Q: Should the filter pull air or push it?
A: Most growers mount the filter inside the grow space and pull air through it with an inline fan. That keeps the room under slight negative pressure, which helps contain odor.