The G2® Grease Guard® system begins with the grease deflecting flashing, which channels all contaminants discharged from the exhaust fan into the G2® Grease Guard® filter system. The contaminants and rainwater are captured in the porous top pre-filter and then dispersed toward the Advanced Filter Composite®.
 
The Advanced Filter Composite® consists of transfer, absorption and barrier filter layers. The transfer filter repels rainwater and harmful ultraviolet rays, while quickly transferring the contaminants to the absorption filter layers. The nearly fifty absorption layers trap and hold the contaminants within the G2® Grease Guard® system. The contaminants wick throughout the absorption layers and are prevented from exiting the system by a leak proof barrier layer. Under the Advanced Filter Composite® lies the bottom airflow filter, which allows air to circulate throughout the filter system.
 
The final component is a fire barrier layer, which is placed in the bottom of the G2® Grease Guard® system to protect the roof and building from any potential exhaust system fire hazards. The entire filter system fits within a 4" high sturdy patented frame that is assembled around the exhaust fan and contaminated areas.