Introduction
The Double Lifting Window is a vertically operated window system with two movable sashes. It is widely used in residential, commercial, and hospitality projects where efficient ventilation and modern aesthetics are required.
Technical Specifications
1. Frame System
Material: 6060-T66 aluminum profiles (2.5mm wall thickness) with 25µm electrophoretic coating (1,500-hour ASTM B117 salt spray resistance)
Thermal Break: Polyamide 6.6 barriers eliminating cold bridging (-40°C condensation threshold)
2. Glazing & Insulation
Glass Unit
5mm low-E outer pane + 16mm argon cavity (90% purity) + 5mm laminated inner pane.
Performance:
U-value: 1.2–1.8 W/m²K
Acoustic rating: Rw 42 dB (optional Rw 48 dB with acoustic laminate)
Impact resistance: EN 12600 Class 1 (withstands 90mph winds)
3. Hardware & Operation
Lifting Mechanism: Stainless steel counterweights + ceramic rollers (35N operating force)
Security: 3-point multi-locking system (EN 1627 RC2 certified)
Tilt Range: 85° for interior cleaning without sash remova
Product Features
Sound & Thermal Insulation
Thermal-break profiles and Low-E insulated glass with argon gas filling isolate external noise (42 dB reduction) and blocks heat transfer (U-value 1.2–1.8 W/m²K), improving indoor comfort.
Durable Construction
Reinforced aluminum frame with anti-corrosion coating, paired with self-lubricating ceramic rollers tested for 100,000 cycles, supports up to 150kg per sash, ensuring stable operation and extended service life.
User-Friendly Design
Optimized counterweight system allows effortless operation (35N), while the tilt-in sash (85°) enables convenient cleaning.
Applications
Healthcare: Antimicrobial handle coatings on double lifting window units for hospitals
Hospitality: Acoustic-rated versions for urban hotels (tested at 38 dB noise reduction)
Education: Child-safe restrictors and laminated glass for schools
Customization
1.Glazing Performance Custom
Optional Rw 48 dB acoustic laminate, enhanced impact glazing, customized argon cavity thickness for thermal demands.
2.Surface Finish Custom
200+ RAL scratch-resistant powder coatings, anodized finishes for coastal use, antimicrobial handle coatings for special scenarios.
3.Safety Hardware Custom
Configurable child-safe restrictors, high-precision anti-theft multi-locks, corrosion-resistant hardware kits for coastal zones.
4.Installation Accessory Custom
Custom laser-leveled mounting templates, pre-assembled frame accessories, dedicated drainage components for humid areas.
why choose us
OEM & ODM Service
DESLANO provide full customization support for our products. Whether you need private labeling, exclusive models, or full product development, our experienced engineering and design team can turn your ideas into reality.
01
Reliable Quality & Certifications
All DESLANO products meet international safety and performance standards, including CE, ISO9001, and SGS testing. We conduct 100% inspections before delivery, including checks on dimensions, glass strength, coating thickness, and sealing performance.
02
Global Project Experience
DESLANO has completed projects in Germany, Italy, the USA, New Zealand, and more, which has earned us long-term trust from contractors, builders, and distributors. We are well-versed in regional standards and aesthetic preferences, and our international project team provides localized solutions for both residential and commercial use.
03
Strong Manufacturing Capability
DESLANO operates a modern production base equipped with advanced aluminum extrusion, glass cutting, tempering, and powder coating lines. Our factory covers over 20,000 square meters, enabling us to efficiently handle both large-scale projects and customized small-batch orders.
04
After-Sales Support
Our professional sales and service teams respond within 24 hours, providing technical support, installation guidance, and spare part assistance when needed. For long-term partners, we also offer priority production scheduling and customized logistics options to ensure timely delivery worldwide.
05
FAQ
Q1: What is the difference between single and double lifting windows?
A: Double lifting windows have two operable sashes, allowing more flexible ventilation control compared to single-sash systems.
Q2: What is the typical lead time for bulk orders?
A: Standard production lead time is typically 20–35 days, depending on project scale and customization level.
Q3: Do you support project-based customization?
A: Yes. Full OEM/ODM service is available, including CAD drawings, material selection, and hardware configuration.
Q4: How is installation handled for overseas projects?
A: We provide installation manuals, videos, and remote technical support to assist contractors.
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