ABBP-5Pcs 4Inch 304 Stainless Steel, Louvered Grille Cover Vent Hood Flat Ducting Ventilation Air Vent Wall Air Outlet

Does it include wireless functionality? : No Does it include a Battery? : No High-concerned chemical : None Origin : Mainland China Specification 1 : Air Vents Specification 2 : 304 Stainless Steel Air Vents Specification 3 : 100mm vent cap Specification 4 : Ventilation Grille Specification 5 : exterior vent cap