Cloudland series is a window and gauze fan integrated outward opening window, its wall thickness is 2.0mm, exceeding the national standard. The inclined line pressing design of cloudland is simple and three-dimensional; with double flat frame and frame fan and the frame and fan inside and outside flush design, showing modern minimalist light luxury aesthetics. 5mm + 19A (warm edge strip) + 5mm hollow tempered glass, and three layers of EPDM sealing rubber strip in the opening position, soundproof and noise reduction effect can reach the highest standard of system doors and Windows. 24mm wide, multi-cavity structure PA66GF25 nylon insulation strip, the wall thickness is 2.0mm, multi-cavity broken bridge structure design, three sealing vertical isotherm design, using double sealing strip inside and outside of the glass, multiple barrier cold and heat conduction, heat preservation and insulation performance is better. Implicit drainage structure, match with drainage cover of self-developed, vertical drainage is more smooth. The inner opening fan is equipped with R3 level true protection angle, a newly upgraded integrated arc metal protection angle, The safety limiter prevents the opening angle of the window sash from being too large, effectively preventing children from climbing out of the window, and protects family safety; the frame and fan inside and outside flush design, eliminates safety hazards such as cleaning scratches and accidental collisions. The window and gauze fan integrated, 304# stainless alloy gauze, effectively prevent mosquito invasion.