Call Now To Order. 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. Architectural Slot. . Stocked Sizes. 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. Flow Cross for Flowbar Diffusers. Flowline High Capacity Linear Slot Diffuser · Model 35SST VAV · External Louvre A member of the Nailor Industries International group. Flowline Diffuser Vertical. Clear. FBMC. FlowLine is a custom architectural linear slot diffuser system designed to integrate supply and return air openings into interior commercial buildings. FL-TZ. Categories: Air Distribution, Linear Diffusers SKU. 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. 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. © Advanced Air (UK). Flowline™ diffuser assuring proper dimensional layouts for simple diffuser installation.