Aluminum alloy profile full structure waterproof technology design, high-frequency seamless welding at all four corners, completely solve the silicone aging cracking, leakage, water seepage and other hidden problems.
Built-in hinge: the frame and fan fit more closely, with double-layer automotive grade composite rubber strip, better air tightness.
Hidden gas spring, beautiful and firm
The hidden frame design of fan material can be matched with sunlight panel, hollow and laminated glass, with more beautiful appearance.
To do the real skylight does not leak wind, water, water seepage!