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