The Gas Filter A2B2E2K2 is designed with a standard connection thread RD401/7" and in compliance with EN 148-1. CleanAIR canister filters provide a versatile selection for industrial applications, pharmaceutical industries, laboratories, and agriculture. With the standard connection thread RD401/7", these filters ensure compatibility and ease of use across a range of respiratory protection systems, enhancing safety in diverse work environments. Choose CleanAIR for reliable and adaptable canister filters. Features and Benefits Standard connection thread RD401/7" In compliance with EN 148-1 Versatile industry applications