Product Features

● Dual internal micro ventilation fans provide smoother ventilation up and down, with a safe micro opening that does not occupy indoor space. Equipped with 304 high-definition steel mesh mosquito proof ventilation, enjoy a large view of private space, quiet ventilation, and fresh air.

●Internal opening fan, adopting a broken bridge door panel design, more beautiful, soundproof and heat-insulating.

● Dual internal opening, internal and external dual independent system.

●The yarn and inner flat fan have independent systems, and the 304 steel high-definition yarn mosquito proof ventilation system is independent, which does not affect the independent closed waterproof system of the inner fan, fully ensuring the waterproof and wind pressure resistance of the inner fan.

●Single internal bidding with quality hardware, equipped with three layers of sealed native rubber strips for waterproof sealing, sound insulation and heat insulation, unique drainage, 6-layer waterproof process, using windproof drainage cover, truly achieving a waterproof sealing system for internal fan opening.

●German style frame splicing technology ensures frame strength, improves sealing and waterproof performance, and is equipped with a system injection molding process. It uses professional expansion guide injection angle codes and injects professional two-component glue to achieve full glue detection. Apply anti-seepage adhesive to the cross-section, self leveling sealant to the central column, waterproof the entire frame, and prevent water from seeping into the wall or indoor space.

●Adopting reinforced PA66GF25 nylon insulation strips that have passed multi chamber testing, it provides better sound and heat insulation, good weather resistance, and is less prone to aging and deformation.

●Outdoor fixed glass is glue free and uses native EPDM composite foam sealing strips, which are not easy to age or shrink after long-term use. The air chamber type is more soundproof, absorbent and waterproof, and more sealed.

●3C certified Xinyi original glass, safety tempered glass, specifications 5MM+20A MM+5mm, integrated bent aluminum strip filled with durable molecular sieve to prevent fogging and mold growth, sound insulation, heat insulation, anti freezing, beautiful, atmospheric, energy-saving and environmentally friendly.

●Internal and external flat frames, with beveled or generous pressure lines for a more beautiful appearance. The whole frame is connected to the water blocking edge, beautiful and waterproof. Internal fan with safety protection angle