. Categories: Air Distribution, Linear Diffusers SKU. FBMC. FlowLine is a custom architectural linear slot diffuser system designed to integrate supply and return air openings into interior commercial buildings. 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. The Flowline™ FLV Series continuous slot diffuser is designed for. FL-TZ. Architectural Slot. Mitered Corner for Flowbar Diffusers. 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. Flowline Diffuser Vertical. Flow Cross for Flowbar Diffusers. Stocked Sizes. Clear. 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. 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.