OdorHog Activated Carbon Mesh Replacement Filter Bag — Fits 3-inch Body (for 3/2/1.5) | Freeze-Protected Pellets

OdorHog Activated Carbon in a replaceable mesh bag is a drop-in filter refill designed to fit the 3-inch body used by OdorHog 3", 2" and 1.5" vent stack vents to trap odors and keep airflow clear.

This replacement carbon bag lets you refresh an OdorHog vent filter quickly without removing the unit from the roof or vent pipe. The pelletized, freeze-protected activated carbon sits inside a flexible mesh sack sized to fit the common 3" OdorHog body, so you get full coverage across the vent opening and a controlled airflow path through the media. The bag design simplifies maintenance, while the treated carbon is formulated for outdoor temperature resilience.

How do I replace the carbon bag in my OdorHog vent?

Changing the carbon refill is a simple two-handed job that doesn’t require taking the base off the stack. Slightly unfasten the three cap screws, lift the mushroom cap, drop the mesh bag into the chamber, and re-seat the cap so the mesh edges seal inside the housing.

• Loosen the three screws halfway and lift the cap up.
• Place the mesh bag inside, spreading carbon evenly so no gaps exist.
• Lower the cap and tighten screws to secure — filter works immediately.

Will this bag fit my OdorHog 2" or 1.5" vent stack?

Yes — the refill bag is sized to sit within the 3" outer body used on OdorHog vent caps, which also accommodates the 2" and 1.5" internal stacks. That compatibility means one spare part covers multiple OdorHog models for easier inventory and fewer part numbers to track.

• Designed for the 3" body dimension common to OdorHog caps.
• Works with internal 2" and 1.5" pipes when installed in the 3" housing.
• One bag size fits multiple unit configurations for convenience.

How long will this activated carbon last and when should I replace it?

Longevity varies with airflow, odor load and local conditions, but OdorHog recommends swapping the mesh bag approximately every two years for reliable performance. Inspections sooner than that are wise in heavy-use or high-odor environments; replace earlier if you notice reduced odor control or visible saturation of the carbon.

• Suggested replacement interval: about every 24 months under typical conditions.
• Check earlier in high-usage or high-odor settings; replace if effectiveness drops.
• Pelletized carbon is treated with freeze protectant for cold climates.

Does the mesh bag affect airflow or installation safety?

The mesh design maintains free airflow through the pelletized carbon while keeping media contained, so ventilation performance remains steady. Installation is straightforward and safe when following basic ladder and roof precautions; the bag can be replaced with the vent still mounted to the pipe in most cases.

• Open mesh keeps air moving through the carbon bed for consistent ventilation.
• Media stays contained to prevent mess during replacement.
• Replacement can be performed with the vent installed on the stack.

Who is this for: This OdorHog activated carbon mesh replacement bag is made for homeowners, plumbers, and maintenance personnel who own OdorHog vent caps and want an easy-to-install, freeze-protected carbon refill. It’s ideal if you prefer a low-effort swap that restores odor control without removing the vent assembly from the pipe — especially useful for seasonal properties, buildings in colder regions, and anyone keeping a small inventory of universal replacement parts for multiple OdorHog models.