There is no fixed length width outlet, the outlet of the specific circumstances of the installation to determine the specifications according to customer needs. The main outlet has a double single Grille, sidewall Grille, can open the outlet, square and rectangular diffusers, strip straight piece diffuser, seam flap-type outlet, egg format outlet, fixed blade oblique outlet, since vertical louvered vents, brother fixed air vent louvers, aluminum filters, curved outlet, removable outlet, linked Grille, leafy off valve, waterproof Grille, orifice plate outlet circular self-hanging Grille, circular diffuser, spherical adjustable outlet, swirl diffusers, spherical vents.