For field-installation atop XPert Balance Filtered Systems and XPert Bulk Powder Filtered Systems. Provide a second level of HEPA Filtration to meet USP <800> standard for redundant HEPA Filter in series. Each Kit includes one HEPA Filter, set of bag and straps for bag-in/bag-out system, complete metal support system, as well as certifier installation instructions. Kit adds 12.9" inches to height of an existing System. Contact Labconco for optional Canopy Connection for use with this Kit.