Double Hung Vertical Sliding Windows | LUYISI Factory

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Overview of double hung vertical sliding windows

Overview of double hung vertical sliding windows

Since we were founded in 2002, LUYISI Doors & Windows has been a dedicated leader in the system doors and windows industry for over two decades. As an experienced factory, we focus on the research, development, manufacturing and sales of high-quality system doors and windows. With an annual output of over one million square meters and the support of partners worldwide, we ensure that customers can enjoy a high-quality and worry-free experience from placing an order to receiving after-sales service. Our professional design, producing and sales teams are dedicated to providing enthusiastic and considerate services, and adhere to the highest integrity standards, offering customers comprehensive one-stop solutions.
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Advantages of double hung vertical sliding windows

We strictly control quality during inspection and shipment. Products undergo multiple checks before shipping to meet customer and international standards.

Strong Manufacturing Capacity

With an annual output of over one million square meters, LUYISI has the capacity to support large-volume orders, customized products, and long-term project supply. Our stable production system helps ensure consistent quality, reliable lead times, and efficient delivery.

Professional One-Stop Service

From product selection and design communication to manufacturing, shipment, and after-sales support, we provide a complete one-stop service experience, helping customers save time, reduce communication costs, and achieve smoother cooperation.

Excellent Certifications

National certifications: Nfrc and Csa, Energy star

Annual Exports 1,000,000 m²

Luyisi exports 1 million square meters annually, showcasing our production strength.

double hung vertical sliding windows

140 Series Premium Lift & Slide Door for Balcony VIEW DETAILS

140 Series Premium Lift & Slide Door for Balcony

128 Series Thermal Break Hidden Track Aluminum Sliding Window VIEW DETAILS

128 Series Thermal Break Hidden Track Aluminum Sliding Window

Aluminum Wood Interior Doors VIEW DETAILS

Aluminum Wood Interior Doors

T19 smart entry door lock with 304 stainless steel inlaid front panel VIEW DETAILS

T19 smart entry door lock with 304 stainless steel inlaid front panel

Our double hung vertical sliding windows feature two operable sashes that slide up and down independently for flexible ventilation. Made of premium aluminum frames and safety tempered glass, they are robust, weather-resistant and built for long-term use. Precision hardware ensures smooth, quiet sliding without sticking, while multi-layer sealing delivers superior waterproof, windproof and sound insulation effects. The classic and versatile design fits most residential and commercial architectures. Custom sizes and surface finishes are available to meet your personalized installation and decoration needs.

Frequently Asked Questions (FAQ)

Q.Can aluminum alloy windows be customized?

A.Yes. We offer comprehensive customization services, including options for dimensions, colors, glass types, profile wall thickness, and opening styles (such as sliding, casement, folding, or tilt-and-turn).
A. High-quality aluminum alloy windows featuring thermal break technology are designed as complete system windows. This structure effectively blocks heat transfer, providing better thermal insulation, sound insulation, and durability than standard aluminum windows. Insulated glass and optional foam-filled profiles can further improve energy efficiency and indoor comfort.
A: Yes,our products meet NFRC,AS2047,CSA and AAMA standard for now and also we will make our product extra tested and certificated if you required.
A: We offer installation video guidance or send engineers to provide on-site guidance
A: 23-25 days after deposit and drawing confirmed

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