From high-end villas to premium apartments — our ultra-narrow outward opening windows deliver floor-to-ceiling light, clean architectural lines, and effortless ventilation. Trusted by architects and developers across 30+ countries.
Products Description
Product Parameters
Minimalist Narrow Frame Fixed & Outward Opening Window
Slim Frame Integrated Window | Outward Casement + Fixed Panoramic View.
Product Showcase
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18–25mm ultra-narrow visible frame, slender profile, larger glass area, enhanced daylight and panoramic view
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Concealed hinges & hidden drainage system, no protrusions inside and outside, minimalist flat appearance
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Slim flat handle without bulky base, smooth lines, unified facade for the whole house
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Eliminate visual segmentation, ideal for balcony integration and floor-to-ceiling windows, brighten small rooms
Customer Feedback
We have professional engineer support, high efficiency sales team and competitive price superiority, Our products have won the praise and love of clients at home and abroad.and attract customers from all over the world, we export to over 50 countries
| Customer Pain Points |
Our Solutions |
| Bulky Traditional Frames: Obstruct natural light and conflict with modern minimalist interior designs. |
Ultra-Slim Profile: Minimalist narrow frame design increases light intake by 30%, perfectly matching modern aesthetics. |
| Poor Sealing Performance: Outward-opening windows are prone to water leakage and air infiltration during heavy rain. |
Triple Sealing System: Utilizes three layers of imported EPDM sealant strips to achieve top-tier watertightness and airtightness standards. |
| Short Hardware Lifespan: Frequent operation often leads to loose handles and rusted hinges over time |
Equipped with imported hardware; supporting 100,000+ trouble-free opening cycles. Hardware customization available. |
| Safety Risks: Concerns about windows falling from high-rise buildings or children accidentally opening them. |
Safety First: Standard anti-fall cable design combined with hidden built-in child locks to ensure absolute family safety. |
Installation Instructions
Product packaging
Company Profile
Zhengzhou Lange Intelligent Technology Co., Ltd. is a leading integrated enterprise specializing in high-performance system windows and Intelligent Space/Sleep Pods. With 22 years of engineering excellence and 80+ sets of CNC equipment, we maintain a 500,000 SQM annual capacity. As a strategic partner of YKK, LIXIL, and LG, we cross-apply premium insulation technology to our "Plug-and-Play" space pods for glamping and commercial use. Guided by craftsmanship, we turn customer expectations into reality with integrity and precision.
FAQ
Q1Are you a factory?
Yes, we have our own factory with over 22 years of experience. We are located in Zhengzhou, Henan Province.
Q2As a first-time online buyer from China, how does the ordering process work?
Don't worry, we have over 20 years of export experience worldwide with dedicated professional support. We will guide you clearly through the entire workflow: Order → Production → Shipment → Delivery.
Q3What are your payment terms and how can I pay?
We support 100% in advance or deposit in advance with the balance due before shipment. Accepted methods include TT (Wire transfer), online transfer, Credit card, VISA, Paypal, Apple Pay, and 100% irrevocable L/C at sight. Specifically for T/T: 30% deposit and 70% balance before shipment.
Q4How long is the delivery cycle?
Delivery time depends on size, glass configuration, color, hardware, level of customization, and order quantity. Once design, payment terms, and technical specifications are confirmed, we provide a formal production plan. For customized projects, sufficient time is recommended for production, quality inspection, and shipping.
Q5Can the panoramic sliding doors and windows be customized in size?
Yes. Dimensions, number of panels, opening direction, glass configuration, color, lock type, and track type can all be customized according to project requirements. Please provide doorway width, height, installation location, and on-site photos before placing an order so we can calculate a tailored solution.