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