DOUBLE HUNG
WINDOW SYSTEM

Maximum Size Of Sash Width ≤1500mm / Height ≤1200mm

Thickness Of Main Profile 1.8mm

Glass Clamping Thicknesss 44mm

Load Bearing of Sash ＜100kg

Water Penetration 750Pa

Air Leakage

Positive pressure Up to Level 8 / Negative pressure Up to Level 8

Structural Test Pressure ＜6000Pa

U-Factor ≥0.25 Btu/(hr x ft² x ºF)

Specifications

Thermally broken aluminum window system with double glazing and multi-layer sealing, providing excellent thermal insulation, airtightness, water resistance, and durability for residential and commercial use.

Flexible Ventilation

The Double Hung Window System allows both the upper and lower sashes to move vertically, providing flexible ventilation options.

Superior Energy Efficiency

Equipped with multi-layer brush seals and optional double glazing, this system effectively minimizes air leakage and heat transfer.

Classic Design with Easy Maintenance

Featuring a timeless vertical symmetry, the Double Hung Window System blends seamlessly with traditional or modern facades.

Engineered with multi-layer brush and EPDM rubber seals, the system offers outstanding air tightness, water resistance, and insulation performance. Optional thermal break profiles and integrated drainage channels further enhance energy efficiency and protection in all weather conditions.

DHWS100

Frame Options

Frame Colors

Aluminum frames come in various colors and finishes, seamlessly matching any design. Powder-coated and anodized surfaces ensure lasting aesthetics and low

The Double Hung Window System uses high-strength aluminum profiles with precise extrusion technology, ensuring excellent structural stability and smooth vertical operation. Its dual-sash balancing design allows both sashes to move effortlessly while maintaining long-term durability.

Double glazing can withstand greater wind pressure in high-rise apartment buildings, ensuring safety and stability while effectively reducing external noise for a quiet living environment.

Glazing Options

Triple glazing is widely used in buildings located in cold or noisy environments. Compared to double glazing, it offers better insulation, energy efficiency, and soundproofing. It helps reduce heating and cooling costs and creates a quieter, more comfortable indoor space.

Double Glazing

Triple Glazing

Operating the Tilt Sash Function

Detail

Locate the two tilt latches on the top of the bottom sash.

Slide the latches inward toward the center of the sash and pull towards you to disengage the sash from the frame.

To operate the top sash, rotate the bottom sash downward until it rests against the bottom sill.

Using the pull rail on the upper sash, pull downward until the bottom of the top sash is approximately 6” above the open bottom sash.

Screening Options

We offer a wide range of insect screen solutions including vertical roller, horizontal sliding, pleated, and framed types—each tailored to suit different spaces and usage needs. Whether for bedroom or kitchen windows, or large balcony and patio doorways, our screens provide both functionality and aesthetic appeal.

Case