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