Aluminium Windows

Aluminium Windows in Mumbai — Nine Systems, One Japanese Standard.

TOSTEM's aluminium windows span sliding, casement, awning, fixed, French, tilt-and-slide, slit, vertical sliding, and glass-to-glass corner designs — engineered for insulation, weather resistance, and up to 40 years of colour retention.

Available Designs

A window system for every opening.

Sliding Windows

Smooth-gliding sashes in 2–4 panel configurations across 2–3 tracks, suited to balconies, bedrooms, and living spaces.

TEXGUARD coating for lasting lustre
Crescent lock, with multi-lock options
Wide glass panels, narrow sightlines

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Casement Windows

Side-hung sashes that swing fully open on a crank or handle, for maximum ventilation and unobstructed views.

Friction-stay or hinge/pivot hardware
Single or multi-lock options
TEXGUARD protective coating

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Awning Windows

Top-hinged sashes that open outward from the bottom, ventilating a room while shedding rainwater.

Single-lock, multi-lock, or operator-handle options
Nano-tech gaskets at frame corner joints
Suited to heavy-rain and coastal regions

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Fixed Windows

Non-opening picture windows with thick, permanently sealed glass for wind-load performance and daylight.

Fixed, non-operable glass panels
Strong wind, dust, and water sealing
TEXGUARD and anodised coating

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French Windows

Double-panel windows with classic proportions, often run floor-to-ceiling for panoramic views.

Airtight rubber gaskets
TEXGUARD coating for weather resistance
Insect screen available

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Glass-to-Glass Corner Windows

Two glass panes meet at a corner without a frame post, for an uninterrupted wraparound view.

Inward and outward corner configurations
Rubber-gasket sealing at the corner joint
Large panels for maximum daylight

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Tilt & Slide Windows

Tilts inward from the top for draft-free ventilation, or slides fully open for unrestricted access.

Secure tilt position for rain protection
Crescent lock
10× stronger than UPVC

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Slit Windows

Narrow, fixed-glass windows in horizontal or vertical orientation, used for light and clean architectural lines.

Permanently sealed, non-operable glass
Horizontal or vertical orientation
Roughly 4–5 hour installation

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Vertical Sliding Windows

Dual sashes slide vertically for ventilation without swinging into interior or exterior space.

Sashes slide up and down independently
Nano-tech gaskets at corner joints
10× stronger than UPVC

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Our Series

Awards & Recognitions

German Design Award 2021

Red Dot Award 2021

iF Design Award 2021

Aluminium Windows in Mumbai — Nine Systems, One Japanese Standard.

A window system for every opening.

Sliding Windows

Casement Windows

Awning Windows

Fixed Windows

French Windows

Glass-to-Glass Corner Windows

Tilt & Slide Windows

Slit Windows

Vertical Sliding Windows

Three series, engineered to different briefs.

Grants

ATIS

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