LOW AIR RESISTANCE – Less air resistance helps extend and protect your HVAC by making it work less hard. You will also enjoy the energy savings. REUSEABLE – Forget about the disposable one-use fiberglass or flimsy paper filters. Reuse these rigid air filter media many times and reduce waste. SUPERIOR FILTRATION – Don’t sacrifice good quality filtration for better airflow. Our filter media has an impressive MERV 6 rating, much higher than traditional fiberglass or hogs hair filters. CUT TO FIT YOUR SIZE – We offer many sizes to ensure a perfect fit for odd-size and unconventional vents. You can easily trim the filter media to your exact specifications. MULTI-PURPOSE USE – Can be used for various applications in other high dust environments. Great to use as a prefilter or filter for many industrial applications.