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