DBL-275/2P-4L/5T Side Outlet Dry Bulk Air Filters, Polyester Element, 5 Micron, 2 Elements, Black

Because dust is what kills blowers. The intake air carries fine particulate, and without a filter in front of it, those particles grind away at the lobes, bearings, and seals. Protect the inlet and you protect the blower, it's that direct.

Usually $1,000 to $5,000 to repair depending on the damage, plus the downtime that comes with it. A filter element is a lot cheaper than that, making a filter purchase a long-term investment in your equipment.

Four things. Moisture, which destroys paper elements and corrodes the housing. “Blinding” from old inside-out airflow designs that waste the element's surface area. Noise from high-velocity air, often over 100 dB. And dust overload in filters that were sized too small.

Polyester shrugs off moisture instead of falling apart in it, filters above 99% efficiency at 5 microns, and holds 40 to 50 percent more dust before it needs to change. For a dusty, damp application like this, it's the better media and it's what we build our elements from.

Rated for both pressure and vacuum. Internal baffling to shield the element from the raw intake blast. A 1-inch drain port so water doesn't pool at the base. A corrosion-resistant finish, such as black powder coat, or 304 stainless for salt country. An integrated silencer to knock down the noise without choking flow. And an outside-in airflow path, so you actually use the whole element.

On high-dust loads, yes, it's worth it! A precleaner is a centrifugal first stage that spins out up to 90% of the big particles before they ever reach the main filter. Less load on the element means it lasts a lot longer.