Adjustable fan heater vent guard, expandable up to 25cm x 53cm. - Type: Fan heater vent guard - Size: Up to 25cm x 53cm - Features: Expandable and contractible - Material: Metal mesh Thank you for viewing. I used this for about two seasons and have stored it for a long time. I am selling it because my child has grown up and no longer needs it. This is highly recommended for those with young children. It has become slightly white due to wiping it with a towel during cleaning. Please refer to the images. This product is useful for preventing burns and ensuring the safety of young children and family members. Please consider purchasing it.