Three Diamond UPVC manufactures heavy-duty UPVC door profile systems in Chennai — sliding door tracks and shutters with walls up to 3.5 mm, casement door frames, and French door sections — supplied wholesale with matching hardware to fabricators, builders and dealers across Tamil Nadu.
Doors work harder than windows: thousands of open-close cycles a year, heavier glazed shutters, slamming, monsoon exposure at balconies and utility areas. That is why our door sections are the heaviest extrusions we make — sliding shutter and track sections run up to 3.5 mm wall thickness with a 5-chamber design, deep reinforcement pockets for galvanised steel, and interlock geometry that keeps large shutters rigid and rattle-free.
Like every Three Diamond extrusion, door sections use lead-free, calcium-zinc stabilised UPVC with titanium dioxide, so south-facing balcony doors don't yellow and coastal installations don't chalk. Material is CIPET lab tested — documentation available with your quotation from our quality assurance program.
Two- and three-track frames with heavy-load shutters for balcony doors, living-room openings, office partitions and showroom fronts. Smooth roller operation, brush-seal and EPDM weatherproofing, shutter heights suited to full-height glazing. Full specs: 60 Series sliding system.
Door outer frames and wide sashes from the 60 Series casement system build single and double-leaf openable doors — main entrances, French doors, bathroom and utility doors — with multi-point locking compatibility and double gasket sealing.
For hotels, institutions, industrial facilities and high-wind coastal sites, the 80 Series (112 mm, 6 chambers) carries oversized and heavy-traffic door assemblies.
| Factor | UPVC Door Profile | Wood | Aluminium |
|---|---|---|---|
| Moisture / termites | Immune | Swells, termite risk | Immune |
| Thermal insulation | Excellent (multi-chamber) | Good | Poor (conducts heat) |
| Coastal corrosion | None | Rot risk | Pitting unless coated |
| Maintenance | Wipe clean | Polish/paint cycles | Low |
| Acoustic sealing | Up to ~40 dB systems | Gap-prone | Moderate |
Balcony sliding doors in residential towers • villa main and French doors • bathroom and utility doors in apartments • office and showroom partitions • hotel and hospital corridors • institutional and government buildings. Explore all applications and industries we serve.
Share your door schedule or monthly volume — tiered manufacturer quote within 2 business hours.
Related: UPVC Window Profile Manufacturer • 60 Series Sliding • Tamil Nadu Wholesale Supply