General description Made of durable stainless steel, these ventilation grilles are designed to withstand various weather conditions while remaining rust-proof. They provide a sturdy and long-lasting solution for effective air circulation and insect protection. Technical specifications Material: Stainless Steel Diameter: 100mm Installation Simple and hassle-free installation process. Insert the grille into a round hole on the exterior wall. For added stability, it can be fixed with glue or cement. Usage Promotes good air circulation inside and outside. Improves ventilation for a fresh and healthy atmosphere. Suitable for residential, commercial, and industrial environments.