Features:

• Dual stage foam: Two different pore sizes create more trapping area for even the smallest dust particles
• Flame laminated foam: Both *stages* are not glued, but heat sealed to provide maximum air flow
• Reticulated foam: Increases dirt stopping surface area and increase foam strength
• Strongest glue seams will withstand harsh solvents and gas (although we can*t understand why you*d want to use them). Pull as hard as you can, foam will rip before the glued seam will
• Light color foam easier to spot where the filter oil has covered and where it has not
• OEM size for more dirt stopping capability
• Handmade
• Every square inch of each filter is and inspected for quality
• One year warranty
• Made in the USA, not a cheap Chinese throw away