Air Box Junior Replacement HEPA Filter - 4 x 12 x 12-in

Cleaner Intake Air for Your Grow Room - 4 x 12 x 12 in

Dust, mold spores, pollen and insects can enter a grow room through the intake air and settle on plants, equipment and lenses. This replacement HEPA filter for the Air Box Junior removes airborne particles before they reach your plants. The distributor lists a MERV 13 rating and 98% capture of particles down to 0.3 microns.

Sold as a single replacement unit, it suits growers who need to refresh an existing Air Box Junior housing. It works in small home setups and in commercial rooms where several units run at once.

Key Features & Benefits

• MERV 13 filtration — captures fine airborne particles such as dust, spores and pollen.
• Accepts standard 10-in duct — connects to common ducting without custom adapters.
• Disposable replacement design — swap in a new filter without replacing the whole housing.
• Helps keep lenses clean — less dust and fewer insects reach glass lenses.
• Commercial or residential use — fits a range of cultivation spaces.

Who Should Use Air Box Junior Replacement HEPA Filter

Use it if you already run an Air Box Junior and the filter needs replacing. It suits indoor growers, from hobbyists to licensed commercial operations, who want cleaner intake air.

About Air Box Junior Replacement HEPA Filter

This is an each-of-1 replacement HEPA filter, product code HT4501-H, in the Environment filters and odor control category. It measures 4 x 12 x 12 in and ships at 3.5 lb. The distributor lists an airflow rating of up to 400 cfm for the HEPA filter.

Frequently Asked Questions

Q: What size is this filter?
A: The product measures 4 in long by 12 in wide by 12 in high. It ships at 3.5 lb.

Q: What duct size does it fit?
A: It accepts standard 10-in duct. Check your housing connection before ordering.

Q: What does MERV 13 mean?
A: MERV is a standard rating for how well an air filter captures airborne particles. A higher number means finer filtration, and 13 is the rating the distributor lists for this filter.

Q: How many come in a sale?
A: Each sale is one filter.

Q: Is the filter reusable?
A: The distributor describes it as a disposable, replaceable filter. Plan to replace it when airflow drops or the filter is loaded with debris.