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