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