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
provides protection from all solvents
Original OEM sizes
Handmade in the U.S.A.
One year warranty
DUAL STAGE FOAM: Two different pore sizes create more trapping area for even the
smallest 
