Classic High Quality Hot-Sale Concealed Slide Rail Hold-Open for Optional Hydraulic Door Closer

Classic High Quality Hot-Sale Concealed Slide Rail Hold-Open for Optional Hydraulic Door Closer. High Durability: Passed strict tests with over 500,000 tested cycles for long-lasting performance. Premium Material: Constructed from durable Aluminum Alloy for robust and reliable operation. Wide Application: Suitable for markets, fire exits, homes, hotels, offices, hospitals, and schools. Professional Support: Five years warranty and after-sales service for complete peace of mind. Flexible Customization: Offers full customization, minor customization, and customization from samples or designs. Certified Quality: Meets European Standard EN1154, UL228, and QBT2698 with CE certification. Precise Control: Features two-section speed control and hold-open function for optional hydraulic closer. Expert R&D: Developed by well-known door closer experts with 2 dedicated R&D engineers.