The Flowline™ FLV Series continuous slot diffuser is designed for. . 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. 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. Flowline High Capacity Linear Slot Diffuser · Model 35SST VAV · External Louvre A member of the Nailor Industries International group. Choose an option, 96" Long x 1 1" slot. © Advanced Air (UK). Architectural Slot. Flow Cross for Flowbar Diffusers. Categories: Air Distribution, Linear Diffusers SKU. Call Now To Order. Clear. FBMC. FL-TZ. Flowline Diffuser Vertical. FBP Architectural Linear Diffuser, Aluminum, 1" Slot. Nailor Linear Diffusers and Bar Grilles are engineered and designed to satisfy high performance applications that require an aesthetically pleasing design. Stocked Sizes. Nailor Linear Diffusers and Bar Grilles are engineered and designed to satisfy high performance applications that require an aesthetically pleasing design.