The Helios FRS-VDB FlexPipe bayonet catch cap is a sealing lid featuring a bayonet lock mechanism, specifically designed for sheet metal parts. It is used to close unused openings on distribution or multi-base ventilation boxes, ensuring a tight and secure seal thanks to its integrated gasket. This cap effectively prevents air leakage and protects the system from dust or contaminants, maintaining optimal performance and hygiene in ventilation installations.