●Silicone wool strips are designed around the window sash, which caneffectively improve the sealing performance of the window sash lap jointand reduce the wind whistling sound.
●The embedded frame-wrapped fan structure design ensures thatthe sealing and waterproofing between the frames are effectivelyguaranteed.
●Silent track design, equipped with high-quality silent pulleys, strongload-bearing capacity, high hardness, silent operation, stable anddurable, smooth to push and pul.
●Hidden drainage design with decorative cover plates. it automaticallyopens when draining and closes when not draining. The exterior issimple and clean to prevent dust from entering the room.
