A one-push system that can be opened and closed simply by pressing the push part. Includes a pollen removal filter (removes 90% of 20 μm pollen/90% from pollen/dust, and dust intrusion. Insect repelling net (ABS plastic molded mesh); The front panel can be removed, so it is easy to clean the filter, etc. Care Instructions Clean the filter with water regularly if it gets dirty. [If there is no damage or stain removal, please replace it with the product sold separately. Nasta Mind: Pollen removal filter; Product Specifications: Color: Silver Gray; Applicable Pipe: SU100 (Inner Diameter φ100); Dimensions: A/130 B/97 C/99 D/19 E/79; Material: ABS resin; Uses: General type 9.8 Pa ventilation (? /h):17.0 ●Product photos are printed colors and may differ slightly from the actual color. Please be aware that the specifications and price may be altered. (Manufacturer) Kyowanasta Co., Ltd.