Applicable pipe: Kyowa 150 (inner diameter φ152); Material: ABS resin; Same design as KS-8641PRFK3 / KS-8841PRFK3, giving your room a sense of uniformity. Operated by the pressure difference that occurs inside and outside when operating a range fan. ● Simply push the front panel (close, save, and fully open). ● Fast power supply with the range fan and prevents unpleasant drafts when stopped. This is an airtight type that eliminates unpleasant wind noise caused by the strong wind blowing unique to high rise houses. (When the front panel is closed): Comes with resin net. Comes with a filter for pollen removal (removes 90% of 20μm pollen. The front panel can be closed in strong winds, etc. (Be sure to open the range fan when driving. For efficient performance, we recommend using the KS-V15FS outdoor hood. (P.346) Specifications: Includes filter and resin net Replacement filter: KS-FK8626 Replacement resin nets: KS-#8626 Note: The register must be removed from the ceiling over the required dimensions to remove the front panel. In addition, take into account the wall stain, apply as far as possible away from the wall or ceiling.