How to choose the passive doors and Windows that meet the requirements （II）
Evaluate airtight performance.
Sealing strip quality:
High-quality sealing strips are a key factor in ensuring the airtight performance of doors and windows. The strips should have good elasticity and durability. For example, ethylene propylene diene monomer (EPDM) rubber sealing strips are an ideal choice. They can maintain good elasticity during long-term use and effectively fill the gaps between the door and window frames and sashes to prevent air leakage.
The shape and installation method of sealing strips can also affect airtight performance. Some doors and windows with multi-channel sealing designs can better block air penetration through combinations of sealing strips of different shapes (such as duckbill shape, wavy shape, etc.).
Tightness of hardware accessories:
The quality of hardware such as hinges, handles, and locks is directly related to the tightness of doors and windows after closing. High-quality hinges can ensure that the door and window sashes fit tightly with the frames. For example, door and window hardware with a multi-point locking system can lock the doors and windows at multiple positions when closed, forming a tight sealing state between the doors and windows and the frames and improving airtight performance.
