Grants Series
Break The Norm
Fine line of design and function — redefining aluminium windows and doors with Japanese precision engineering.
Premium Aluminium Solutions
Discover our comprehensive range of high-quality aluminium windows, doors, and building solutions, crafted with Japanese precision for Indian homes.
Aluminium Doors
Elegant and durable aluminium doors featuring Japanese precision engineering. Available in Sliding, Casement, French, Folding, Corner Slider, and Slide & Fold designs.
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Aluminium Windows
Premium aluminium windows crafted for Indian homes with superior thermal insulation, sound reduction, and weather resistance.
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Steel Entrance Doors
GIESTA steel entrance doors — combining robust security with sophisticated Italian design for an impressive first impression.
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Facades
Stunning curtain wall and storefront facade systems that transform building exteriors with modern elegance and structural integrity.
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Interior
Beautiful interior solutions including hanging, swing, and fixed divider doors that redefine spaces within your home or office.
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Airflow System
Advanced ventilation and louver systems designed to maximize airflow while maintaining aesthetics and protection from the elements.
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Each series is engineered for specific needs — from premium luxury to reliable performance.
Break The Norm With Fine Line Of Design & Function
Grants Series
Break The Norm With Fine Line Of Design & Function
The Grants Series represents our flagship collection — where minimalist design meets cutting-edge functionality. Featuring ultra-slim profiles with maximum glass area, the Grants Series delivers panoramic views and seamless indoor-outdoor living. Engineered with Japanese precision, every detail is crafted to break the norm.
- Ultra-slim profile design with fine lines
- Superior thermal insulation technology
- Enhanced sound reduction up to 40dB
- Multi-point locking system for security
- Dual sealing system for weather protection
- Available in 100+ colour options
100+ Premium Finishes
Choose from our extensive palette of colours and wood finishes to perfectly match your aesthetic vision.
Select a Colour
Trusted Global Partnerships
As part of the LIXIL Group, TOSTEM India is backed by world-renowned brands delivering comprehensive living solutions across the globe.
Excellence Recognised Worldwide
TOSTEM's commitment to design innovation, quality, and sustainability has been recognised by prestigious international and national award bodies.
Red Dot Design Award
Red Dot Institute, Germany
Prestigious international design recognition for TOSTEM's innovative aluminium window and door systems, honouring exceptional product design and functional excellence.
Red Dot Design Award
Red Dot Institute, Germany
Another prestigious Red Dot recognition for TOSTEM's continued design innovation and excellence in aluminium window and door systems.
iF Design Award
iF International Forum Design, Germany
Recognised for outstanding design achievement in the building products category, TOSTEM's series set new benchmarks for aluminium window aesthetics and innovation.
German Design Award
German Design Council
Awarded by the German Design Council for TOSTEM's exceptional design quality and innovation in the building products category.
AAMA Certification
American Architectural Manufacturers Association
Certification from AAMA confirming TOSTEM India's adherence to internationally recognised standards for window and door performance.
SGS Certification
SGS International
SGS certification verifying TOSTEM's products meet rigorous international quality, safety, and performance standards.
JIS Certification
Japanese Industrial Standards
Japanese Industrial Standards certification confirming TOSTEM's manufacturing processes and products meet Japan's rigorous quality requirements.
TIS Certification
Thai Industrial Standards Institute
Thai Industrial Standards certification recognising TOSTEM's commitment to meeting Southeast Asian quality and performance benchmarks.
ASTM Certification
ASTM International
ASTM International certification confirming TOSTEM products comply with globally recognised testing standards for building materials.
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Amazing Aluminium Door Designs to Transform Your Home
Discover stunning aluminium door designs that combine modern aesthetics with superior performance. From sleek sliding doors to grand entrance solutions, find the perfect door for every space.
Our Projects
Browse our collection of beautifully installed aluminium windows and doors across India.
Grants Series Sliding Window
Casement Window Detail
Premium Interior Installation
Modern Facade Design
AP Palazzo Project
Baan Nawat Residence
Chantra Khiri Villa
Exteriors Project
Formal Living Space
SJP Residence
Tostem Chevalife
Oxygen Project
See Our Products in Action
Discover how TOSTEM's premium aluminium windows and doors are manufactured with Japanese precision and installed across India.
Tostem India: Leading Aluminium Windows, Doors Manufacturer & Supplier
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What Our Clients Say
We have a wealth of happy customers who can't help but shout about our excellent services.
Mr. Amarnath
Customer Testimonial
“We are extremely happy with TOSTEM windows. The quality and finish are outstanding, and the installation team was very professional.”
Mr. Dheeraj
Customer Testimonial — Hyderabad
“TOSTEM windows have completely transformed our home. The sound insulation is remarkable and the design is elegant.”
Real Homes, Real Stories
Deltra Aluminium Doors & Windows
“Real homes featuring TOSTEM aluminium doors and windows — hear directly from homeowners about their experience.”
Mr. Pratap's Experience
TOSTEM Windows & Doors
“Outstanding quality and professional service from the TOSTEM team. Highly recommended for anyone looking for premium windows and doors.”
Ready to Transform Your Space?
Get a free consultation and quote from our experts. Discover the perfect aluminium solution for your home or project.