Clear. FlowLine is a custom architectural linear slot diffuser system designed to integrate supply and return air openings into interior commercial buildings. Flowline™ diffuser assuring proper dimensional layouts for simple diffuser installation. FlowLine is a custom architectural linear slot diffuser system designed to integrate supply and return air openings into interior commercial buildings. FBP Architectural Linear Diffuser, Aluminum, 1" Slot. Choose an option, 96" Long x 1 1" slot. The Flowline™ FLV Series continuous slot diffuser is designed for both ceiling and high sidewall applications and provides total air pattern control flexibility. Flowline Diffuser Vertical. Flowline High Capacity Linear Slot Diffuser · Model 35SST VAV · External Louvre A member of the Nailor Industries International group. Categories: Air Distribution, Linear Diffusers SKU. Stocked Sizes. Call Now To Order. The Flowline™ FLV Series continuous slot diffuser is designed for. Mitered Corner for Flowbar Diffusers. . Nailor Linear Diffusers and Bar Grilles are engineered and designed to satisfy high performance applications that require an aesthetically pleasing design. Architectural Slot. Nailor Linear Diffusers and Bar Grilles are engineered and designed to satisfy high performance applications that require an aesthetically pleasing design. FL-TZ. Flow Cross for Flowbar Diffusers. © Advanced Air (UK). FBMC.