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