1. Provincial Space Efficiency:When activated, no need to reserve space for outdoor fan activity, effectively saving room.

2.Effortless Operation: Utilizing a push-pull opening method, it requires no forceful pushing or pulling, suitable for all ages.

3. Energy Efficiency and Eco-Friendly: With superior sealing, it prevents outdoor airflow, achieving energy. saving effects.

4. Safety and Reliability: Featuring a bridge insulation design, it effectively isolates heat and sound transmission.