Fits Filtrabox Expand X1 & X2 *ONLY INCLUDES PRE-FILTER - This replacement pre-filter fits both FILTRABOX EXPAND X models: X1 & X2 Outstanding Fume Extraction: PRE-FILTER: This replacement pre-filter works with your Expand X1 or X2 filter set to remove virtually all laser engraving byproducts: fumes, odors, and airborne particulates, without venting outside. ADVANCED AIR PURIFICATION: Helps eliminate virtually ANY smells and odors from laser operations, including acrylic, rubber, leather, and more. EASY TO INSTALL: All Filtrabox filters are easy to replace. No frustrating setup or dusty cabinets to deal with. LONG LASTING: Replacement filters have a 6-month life cycle but vary depending on daily use.   Please email the following information to support@omtechlaser.com (required by Filtrabox): Your order number Commercial or Residential address Customers' Federal Id Tax # or SSN # Any other specific services required at delivery.   Please contact Filtrabox for your order and tracking info. This product will be shipped to you directly from Filtrabox within 1-2 days.