TOSTEM’s GRANTS 4-panel 2-track sliding door combines modern design with Japanese-engineered precision, offering an ideal solution for spatial expansion. Four panels sliding in parallel across two tracks operate smoothly to create a wide opening while flooding interior spaces with natural daylight. The product delivers both everyday convenience and enhanced aesthetics for luxury architectural projects.
Sturdy Frame Structure, Refined Lines
Featuring a 101.6 mm basic frame profile and a 50 mm sill height, the door frame is engineered with precise proportions to ensure structural strength while maintaining a sleek, elegant appearance. The 2-track system for 4 sliding panels strikes a harmonious balance between...
Sliding Door 4 panels on 2 tracks Grants
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Color
Feature
TOSTEM’s GRANTS 4-panel 2-track sliding door combines modern design with Japanese-engineered precision, offering an ideal solution for spatial expansion. Four panels sliding in parallel across two tracks operate smoothly to create a wide opening while flooding interior spaces with natural daylight. The product delivers both everyday convenience and enhanced aesthetics for luxury architectural projects.
Sturdy Frame Structure, Refined Lines
Featuring a 101.6 mm basic frame profile and a 50 mm sill height, the door frame is engineered with precise proportions to ensure structural strength while maintaining a sleek, elegant appearance. The 2-track system for 4 sliding panels strikes a harmonious balance between load-bearing performance and visual appeal, making it suitable for large-scale projects.
Thick Glazing for Enhanced Protection
The door accommodates glass thicknesses up to 31.5 mm, supporting flexible selections from laminated safety glass to acoustic or thermal insulation glass. This enhances security, reduces external noise, and improves temperature regulation, creating a quiet and comfortable living environment.
Wind Pressure and Water Tightness
Compliant with ASTM E330 standards, the product withstands wind pressures up to 2000 Pa, ensuring stability even during severe storms. Furthermore, a water tightness performance of 300 Pa (ASTM E331-00) prevents rainwater infiltration, keeping interior spaces dry and protected.
Airtightness and Sound Insulation Performance
An airtightness rating of 10.7 m³/h·m² (ASTM E283) minimizes incoming dust and outdoor air leakage, while a sound insulation rating of JIS 25 dB reduces noise pollution—creating a serene environment ideal for townhouses or urban residences.
Convenient 4-Panel Sliding Design
The symmetrical 4-panel sliding mechanism on a 2-track system creates an expansive opening that maximizes natural ventilation. This allows homeowners to effortlessly connect indoor and outdoor spaces, creating a broad, airy atmosphere close to nature.
| Frame depth | 101.6 mm |
|---|---|
| 120 mm (2 tracks sliding) | |
| 178 mm (3 tracks sliding) | |
| Height of sill | 50 mm |
| Glass thickness | Up to 31.5 mm |
Wind
pressure
ASTM E330
2000 Pa
Water
tightness
ASTM E331-00:
300 Pa
Air
tightness
ASTM E283:
10.7 m3 / h – m2
Noise
insulation
JS: 25 dB
Orther Product
