FAQ Aluminium windows and Doors

Capitoline Triad is the authorised partner for TOSTEM and offers you premium-quality aluminium windows and doors from Japan in Delhi, Faridabad, Gurgaon, and Noida. Our products combine aesthetic perfection with technologically advanced engineering from Japan, giving you high strength, minimal sightlines, and optimal functionality. Be it home owners, architects, or builders, Capitoline Triad will give you the perfect housing solution without any hassle.

All of our aluminium window frames are made according to Japanese quality assurance criteria. They are thoroughly tested and guaranteed to be airtight (ASTM E283), water-tight (ASTM E331) and resistant to wind pressure. Your house will be fully secured from torrential rains, dust particles, and all harsh climatic conditions prevailing in Delhi.

We offer a comprehensive range of pre-designed aluminium windows tailored for modern architecture:

• Sliding Windows & Aluminium Slit Windows (Ideal for space-saving and sleek looks)
• Aluminium Casement Windows & Awning Windows (Best for maximum ventilation)
• Tilt and Slide Windows (Premium dual-action functionality)
• Glass To Glass Corner Windows & Aluminium Fixed Windows (For panoramic, unobstructed views)
• Vertical Sliding Windows & Aluminium French Windows (Classic aesthetic with modern durability)

Yes! Our luxury aluminium windows feature advanced sealing technology and can be fitted with double-glazed or laminated soundproof glass windows. This significantly reduces outside traffic noise (perfect for busy Delhi NCR roads) and provides excellent thermal insulation, keeping your interiors cool in summer and warm in winter while reducing electricity bills.

The price of premium aluminium windows depends on several factors, including the product series (like Grants, Atis, Style Line, WE 70, or WE Plus), dimensions, glass type, and customized requirements. Since we offer pre-engineered, factory-finished Japanese systems rather than local fabrications, we recommend Contacting Our Sales Team for an accurate, customized quote for your project.

We provide a wide array of premium doors designed for both luxury and high performance:

• Sliding Doors & French Doors (Perfect for balconies and patios)
• Folding (Bi-Fold) Doors & Slide And Folding Doors (To open up large spaces completely)
• Corner Openable Doors (For seamless architectural transitions)
• Ventilation Doors & Casement Doors (For functional, everyday utility)

GIESTA Doors and Giesta Ventilation Doors are high-security, luxury entrance doors that combine the rich look of wood-finish layouts with the strength of metal. They come equipped with multi-lock security systems, high durability against weathering, and unique user-friendly handles, making them the ultimate statement piece for modern luxury villas and premium homes.

Yes, Capitoline specializes in high-end commercial and residential exteriors. Our portfolio includes:

• Curtain Wall Facades & Store Front Facades (Perfect for sleek, minimalist building exteriors)
• Exterior Fences & Gates (Including Sliding Gates, Swing Gates, and Folding Gate Exteriors)
• Specialty Systems (Like Skylights, Noki, Wrapping Bars, and EZ systems)

We supply the entire premium ecosystem of TOSTEM design lines, including:

• Grants: Our flagship, ultra-luxury series with hidden frames for maximum glass area.
• Atis: A minimalistic design line where all hardware and accessories are seamlessly concealed.
• Style Line / IN16: Perfect for versatile, everyday modern living spaces.
• WE 70 / WE Plus: Engineered specifically to withstand high wind loads in high-rise buildings.

You can book an appointment or request a digital brochure directly through our website. Alternatively, you can visit our offices or call us at +91 9205997882:

• Delhi Showroom: C-16, LGF, C Block Market, Vasant Vihar, New Delhi – 110057
• Faridabad Showroom: First Floor, SCF-78, Market, Sector 15, Faridabad, Haryana – 121007