Structural features:

The medium and high performance system adopts European standard design, and its profiles, hardware and accessories are perfectly compatible and self-contained.
Constant pressure balance principle is adopted to design and construct the drainage system, which has smooth drainage and good water tightness. Adopt high-grade imported hardware driver, flexible opening, zero noise, and ensure ventilation rate; Fixed floor-to-ceiling glass, wide vision, high daylighting rate, and good stress state of window sash, which is not easy to be damaged.

Product performance:
The heat insulation profile adopts the European technical standard, and the reasonably designed profile structure has high thermal insulation and strength. Tight joints, noise and sound insulation.

Handle: The inner window comes standard with Zhongheng custom black handle without base.
Hardware: High-quality customized hidden internal opening and internal inverted locking hardware system is standard.

Standard safety opening range with internal opening and internal pouring: width: 450~750, height: 900 ~ 1500;
(Please follow the manufacturer's recommendation to use hardware when exceeding the size)

Recommended scenarios: Villa, living room, dining room, bedroom