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