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