Air Box 4+ Pre-Filter - 19 x 16 x 1-in

Keep Your Airbox 4+ Breathing Clean - 19 x 16 x 1 in

Dust and particles build up fast in grow spaces and can clog the main filter media early. This replacement pre-filter catches debris before it reaches the Airbox 4+, so the main filter works under less load. A fresh pre-filter on a regular schedule helps hold airflow steady.

As a single 1-inch-thick panel, this unit suits home gardeners and commercial teams who want one replacement on hand per scheduled change. Growers running several units can order more by the each.

Key Features & Benefits

• Made for the Airbox 4+ — a direct replacement, so you avoid guessing at fit.
• 19 x 16 x 1 in panel — a slim profile you can check and swap quickly.
• 3-month replacement interval — an easy schedule to add to your maintenance routine.
• Lightweight at 0.2 lb shipping weight — simple to store a spare.

Who Should Use Air Box 4+ Pre-Filter

Anyone running an Airbox 4+ in an indoor or commercial cultivation space who wants to protect the main filter and keep air handling consistent.

About Air Box 4+ Pre-Filter

The Air Box 4+ Pre-Filter is a replacement pre-filter for the Airbox 4+. It measures 19 x 16 x 1 in, ships at 0.2 lb and is sold each. The distributor recommends replacing it every 3 months.

Frequently Asked Questions

Q: What does this pre-filter fit?
A: It is a replacement pre-filter for the Airbox 4+. Check your unit's model before ordering.

Q: How often should I replace it?
A: Replace it every 3 months. A dustier room may call for earlier checks.

Q: What size is it?
A: It measures 19 x 16 x 1 in.

Q: What is a pre-filter?
A: A pre-filter is a first-stage filter that traps larger particles before air reaches the main filter media. This helps the main filter work longer.

Q: How many come in an order?
A: One pre-filter is sold per order unit, each.