All range of louvers can be choose recessed and surfaced. Product Name: Recessed / Surfaced Louver Specifications: 1) Use for: construction project, office, hotel, ... Power: 1X20W, 1X30W,1X40W,2X20W,2X30W,2X40W,3X20W,3X30W,3X40W, 4X20W, 24X30W, 4X40W, 3) Voltage: 110V,120V,127V,220V,240V 4 ... or V shape . 6)Packing: Standard export carton T8/T5 Recessed/Surfaced Grille lamps(Grid lamp/Louver fixture)