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