Flowline High Capacity Linear Slot Diffuser · Model 35SST VAV · External Louvre A member of the Nailor Industries International group. Flowline™ diffuser assuring proper dimensional layouts for simple diffuser installation. Clear. Flowline Diffuser Vertical. © Advanced Air (UK). 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. Mitered Corner for Flowbar Diffusers. The Flowline™ FLV Series continuous slot diffuser is designed for. 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. FBMC. Flow Cross for Flowbar Diffusers. Nailor Linear Diffusers and Bar Grilles are engineered and designed to satisfy high performance applications that require an aesthetically pleasing design. FL-TZ. Categories: Air Distribution, Linear Diffusers SKU. 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. Choose an option, 96" Long x 1 1" slot. Stocked Sizes.