FILTER MEASURING GUIDE

• DO NOT ROUND UP OR DOWN -- GIVE US YOUR MOST ACCURATE MEASUREMENT
• MEASURE FILTER THE SAME FOR PRE-FILTER WITH OR WITHOUT TOP
  WHENEVER POSSIBLE PLEASE SEND A PICTURE TO SHOW FILTER PLACEMENT IN AIRBOX
  
   

STYLE  EXAMPLES:                                                                                   

HOW TO MEASURE

MEASURE CIRCUMFERENCE (DISTANCE AROUND)  WITH CLOTH TAPE, OR STRING

round

oval

rectangle