Tostem is a premium brand from LIXIL, Japan's largest building materials company. Part of the LIXIL Group Corporation (listed on Tokyo Stock Exchange), Tostem brings decades of Japanese expertise in aluminium window and door systems to India. Our commitment to quality, innovation, and craftsmanship has made us the preferred choice for architects, builders, and homeowners across the country.
At Tostem, we believe that every window and door we create is a testament to the Japanese philosophy of monozukuri — the spirit of craftsmanship. When we entered the Indian market, we saw an opportunity to transform the way India experiences windows and doors. Our pre-engineered system windows bring...
To create a better living environment for people everywhere through innovative, high-quality aluminium window and door systems that combine Japanese precision with local sensibility.
LIXIL is Japan's largest building materials and housing company, listed on the Tokyo Stock Exchange. With over 50,000 employees worldwide and operations in more than 150 countries, LIXIL brings unpara...
Discover why architects, builders, and homeowners across India trust Tostem.
Tostem windows embody the Japanese philosophy of monozukuri (craftsmanship). Every product undergoes rigorous testing and quality checks to ensure it meets the highest standards of precision and durability. Our research and development centre in Japan continuously innovates to create window systems that are not just functional but works of engineering art.
Unlike conventional windows that are fabricated on-site with inconsistent quality, Tostem's pre-engineered system windows are manufactured in a controlled factory environment. This ensures every window that leaves our facility meets exact specifications, providing consistent quality, perfect fits, and superior performance every time.
Every Tostem product goes through over 100 quality checks before it reaches your home. Our commitment to quality is backed by international certifications including JIS (Japanese Industrial Standards), ISO 9001, and ISO 14001. We also provide comprehensive after-sales service and maintenance support.
Tostem's anodized aluminum finish is not just a surface treatment—it's an integral part of the metal itself. This creates a finish that's 5x harder than untreated aluminum, providing superior resistance to corrosion, scratching, and UV fading. Available in a range of elegant colours that maintain their beauty for decades.
Tostem windows deliver up to 40dB sound reduction, creating peaceful interiors even in noisy urban environments. Our multi-point locking system and double sealing technology create an airtight barrier that keeps noise out and comfort in. Tested to international standards for acoustic performance.
A system window is a complete, engineered solution where every component—from profiles to hardware to gaskets—is designed to work together as an integrated system. This systems approach ensures optimal performance in thermal insulation, water resistance, air permeability, and wind load resistance.
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Every Tostem product is backed by international certifications and a comprehensive warranty, giving you complete peace of mind.
Quality Management
Internationally recognized standard for quality management systems, ensuring consistent product quality.
Environmental Management
Certified environmental management system demonstrating our commitment to sustainability.
Japanese Industrial Standards
Products meet the rigorous Japanese Industrial Standards for aluminium windows and doors.
Frame Warranty
Comprehensive 10-year warranty on frames and 5-year warranty on hardware and moving parts.
From raw material inspection to final product testing
A streamlined 4-step journey that ensures precision at every stage.
Free expert consultation to understand your requirements, style preferences, and budget.
Free expert consultation to understand your requirements, style preferences, and budget.
Choose from 100+ designs across 4 series, customized to your architectural vision.
Choose from 100+ designs across 4 series, customized to your architectural vision.
Pre-engineered in controlled factory environments with 100+ quality checks.
Pre-engineered in controlled factory environments with 100+ quality checks.
Professional installation by certified technicians with comprehensive warranty.
Professional installation by certified technicians with comprehensive warranty.
Track every step of your Tostem installation from survey to completion.
Expert technicians visit your site to take precise measurements and assess installation requirements.
Choose from 100+ designs, finalize colours, hardware, and glazing options with our design consultant.
Pre-engineered in our state-of-the-art factory with Japanese precision and 100+ quality checks.
Every product undergoes rigorous quality inspection before leaving the factory floor.
Safe and secure delivery to your site with specialized packaging and handling.
Professional installation by certified technicians ensuring perfect fit and finish.
From elegant windows to grand entrances, explore our comprehensive range.
Explore our range of premium aluminium windows — sliding, casement, awning, fixed, and more.
Starting ₹4,500Discover our aluminium doors — sliding, swing, folding, hanging, partition, and entrance options.
Starting ₹5,200Enhance your interiors with our aluminium hanging and partition solutions for modern living spaces.
Starting ₹3,800Complete your exterior with our aluminium entrance, gate, fence, and facade solutions.
Starting ₹6,100Not sure which product is right for you? Answer 3 simple questions and get personalized recommendations.
Not sure what you need? Answer 3 quick questions about your space and we'll find the perfect match.
Get an instant price estimate for windows, doors, and more. Just select your product, enter dimensions, and choose a series.
Tostem offers multiple series, each tailored to different needs and budgets.
The ATIS series is Tostem's flagship range, offering superior thermal insulation and water resistance. Designed for premium residential and commercial projects, ATIS delivers Japanese precision with Indian sensibility. With its advanced multi-chamber profile design and high-performance sealing system, ATIS provides the ultimate in comfort and energy efficiency.
Plan your full project budget with our advanced calculator. Get cost breakdowns, timelines, and per-unit pricing.
From classic to contemporary, our design catalogue covers every architectural vision.
Top-hung and awning style windows offering excellent ventilation with weather protection.
Elegant swing-style doors with single or double panel configurations for seamless access.
Side-hinged windows that open outward, providing maximum ventilation and unobstructed views.
Innovative corner-opening sliding doors that create dramatic, seamless indoor-outdoor transitions.
Fixed-frame windows designed to maximise natural light and provide panoramic views.
Multi-panel folding doors that stack neatly to one side, creating wide-open spaces.
Classic double-door design with aluminium precision, offering timeless elegance and functionality.
Full-length casement windows that combine the elegance of French design with aluminium durability.
Discover how Tostem brings Japanese philosophy of monozukuri to every window and door.
Watch how our Japanese engineering and pre-engineered system creates windows that transform Indian homes
Tostem's commitment to excellence has been recognized with multiple industry awards.
Recognised for the ATIS series' innovative multi-chamber profile design and superior thermal performance.
Awarded for Tostem's commitment to energy-efficient window solutions and sustainable manufacturing processes.
Voted India's best aluminium window and door brand by the TADA architecture community.
Honoured for breakthrough acoustic insulation technology delivering up to 40dB sound reduction.
Recognised for the Giesta entrance door series' innovative blend of Japanese aesthetics and Indian design sensibility.
Awarded for contributing to green building standards with energy-efficient aluminium window systems.
Browse through our collection of residential, commercial, interior, and exterior projects.
Gurugram, Haryana
Bengaluru, Karnataka
Mumbai, Maharashtra
Delhi, NCR
Goa
Hyderabad, Telangana
Pune, Maharashtra
Chennai, Tamil Nadu
Mumbai, Maharashtra
Delhi, NCR
Jaipur, Rajasthan
Shimla, Himachal Pradesh
Stay informed with expert insights and the latest trends.
Discover why aluminium windows are the preferred choice for modern homes and commercial buildings. From durability to design flexibility, learn about the many advantages of aluminium window systems.
Living in a noisy city? Learn how soundproof windows work, what to look for in acoustic performance, and how Tostem's technology delivers up to 40dB noise reduction for peaceful living.
With so many window types and configurations available, selecting the right one can be overwhelming. This guide walks you through the key considerations for making the best choice for your space.
How Tostem is bringing the Japanese philosophy of monozukuri to Indian homes, transforming the way India experiences windows and doors with precision engineering and quality craftsmanship.
Understand the fundamental differences between pre-engineered system windows and conventionally fabricated windows, and why factory-controlled manufacturing delivers consistently superior results.
Learn how energy-efficient windows can significantly reduce your heating and cooling costs while contributing to a more sustainable future. Discover the technology behind Tostem's thermal insulation.
Get the latest insights on aluminium windows, design trends, and exclusive offers.
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Partnering with India's top developers and builders to deliver excellence.
Hear from architects, builders, and homeowners who have experienced the Tostem difference.
Tostem windows transformed our residential project. The quality and finish are unmatched — Japanese engineering truly makes a difference in aluminium windows. The pre-engineered system saved us significant time during installation.
Real projects, real results. See how Tostem windows and doors transform spaces across India.
Complete home renovation with Tostem ATIS series sliding windows. Achieved 40dB sound reduction facing a busy street, transforming the living experience.
TOSTEM is committed to sustainable manufacturing and eco-friendly practices that reduce environmental impact.
All our aluminium profiles are 100% recyclable without loss of quality.
Our windows reduce energy consumption by up to 40% with advanced thermal insulation.
Certified environmental management system ensuring sustainable production processes.
Committed to achieving zero manufacturing waste to landfill by 2027.
Trusted by 10,000+ homeowners, 500+ architects, and 200+ builders across India
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