If installing on a fire door, the closer must be UL-listed (e.g., UL10C) to meet safety codes. 4. Purchasing Options
Most surface-mounted closers are "tri-packed," allowing for standard (pull side), top jamb (push side frame), or parallel arm (push side door) installation. 3. Key Features to Look For buy hydraulic door closer
For exterior doors, choose a closer with weather-resistant finishes and specialized hydraulic fluid that performs in extreme temperatures. If installing on a fire door, the closer
Controls how fast the door closes generally and for the final 10–12 degrees to ensure it latches without slamming. If installing on a fire door