Replaceable dust mask 1181R-03 type - Dual type with RL2 filter media arranged on the left and right. Economical type for longer use. The filter is an alpha ring filter that is made of ultra-thin glass fiber and molded into a round pleated paper, enabling high collection efficiency and long-term use. By adding advanced processing technology to this alpha ring filter, we have expanded the filtration area to a maximum of about 12 times the bottom area, enabling even higher collection efficiency and longer use. Asbestos removal work level 3. Model Name: Sakai 1181R-03 National Test Passed No. TM224 It is a high-performance dust mask classified as "RL2" with a particle collection efficiency of 95.0% or more. *Since this is a hygienic product, it cannot be exchanged or returned. Please note. *At the time of purchase, the mask comes with a filter in advance. *Additional items must be purchased separately. ●Model Name: Sakai 1181R-03 Type-RL2 ●Tightening Strap: Type RB ●Performance Classification: RL2 ●Mask Type: Replaceable Dust Mask ●Maker: Koken ●Particle Collection Efficiency: 95.0% or more ●Intake Resistance: 50Pa ●Exhaust resistance: 52Pa or less ● Weight: 165g or less Respirator Koken 1181R, Koken Gas mask 1181 RL2, koken mask 1181R RL2, Masker Koken 1181R, MASKER PERNAPASAN KOKEN