90mm Double Sash

IS 12894 Certified

The GBT 90mm Double Sash Series is designed for large, wide-span sliding windows that demand maximum stability, a full range of glazing options, and uncompromising weather performance. The double sash system allows for wider individual sash panels without sacrificing rigidity — ideal for panoramic views and large architectural openings.

Profile Width	90mm
Wall Thickness	2.2mm minimum
Tolerance	±0.2mm
Frame Code	90TLK
Profile Length	5.9m
System Type	Double Sash Sliding
Application	Large Sliding Windows
Colour (Standard)	White
Co-Extrusion Colours	Black / Grey / Brown
BIS Standard	IS 12894
Estimated Lifespan	15+ Years

Request a Quote → Download Brochure

Why This Series

Engineered for Every Detail

Every aspect of the 90DS Series is designed to deliver reliable performance, safety, and long-term value.

Double Sash System

Independent double sash design allows both panels to slide independently — ideal for wide openings that would be structurally challenging with a single sash.

2.2mm Wall Strength

Thicker 2.2mm walls handle the structural stress of large, heavy window panes with ease and provide superior rigidity for wide-span installations.

6 Glazing Configurations

Supports six different glazing codes across single and double glazed units — maximum specification flexibility for any project requirement.

???

Weatherproof Sealing

High-performance EPDM seals on all contact faces ensure total weather exclusion even in wide double sash configurations under sustained wind and rain pressure.

100% Lead-Free

Safe, compliant, and environmentally responsible for residential, commercial, and institutional applications.

Zero Maintenance

uPVC never rusts, rots, or requires painting. A simple wipe keeps the 90mm series performing at full specification for 15+ years.

Customise Your Profile

Glazing & Colour Options

90DS supports multiple glazing configurations and four colour finishes — giving architects and homeowners full creative flexibility.

Glazing Configurations

Six Glazing Choices

Single glass, intermediate beaded options, and full 32mm DGU — the 90mm system accommodates every glass specification from budget residential to high-performance commercial.

Code: 80DYA / 80DYB / 18YX

Single Glazing — Three Options

Standard clear or tinted single glass in three bead configurations. Cost-effective for large residential window runs with moderate thermal requirements.

Code: 88SYA / 88SYC

DGU — With & Without Bead

Double glazed unit in two configurations. Significant thermal and acoustic improvement for premium large-window projects requiring better energy performance.

Code: 80SYB2

32mm DGU — Maximum Performance

Wide 32mm double glazed unit delivering maximum insulation and acoustic performance. Preferred choice for luxury projects and energy-rated buildings.

Colour Finishes

Four Colour Options

Standard white or co-extruded colour profiles. Colour is molecularly bonded at manufacturing — UV-stable and fade-proof for 15+ years.

Classic White

Standard — All series

Jet Black

Co-Extrusion

Stone Grey

Co-Extrusion

Walnut Brown

Co-Extrusion

Manufacturing Technology

Double Sash Precision Engineering

The 90mm Double Sash system is engineered for structural integrity under load. Each profile is extruded with 2.2mm minimum wall thickness and calibrated to ±0.2mm tolerance — ensuring the double sash mechanism operates smoothly without binding, even in large 2400mm+ wide installations. Co-extrusion technology bonds colour to the profile surface during production.

Double Sash System 2.2mm Wall Thickness 32mm DGU Ready IS 12894 Certified

90mm

Profile Depth

Glazing Options

15+

Years Lifespan

Lead Content

Where It Works Best

Ideal Applications

The 90mm Double Sash is the preferred choice for a wide range of residential, commercial, and institutional projects.

Premium Residential

Panoramic & Floor-to-Ceiling Windows

The double sash system handles the structural demands of wide, tall window openings. Ideal where maximum glazed area and unobstructed views are the design brief.

Hospitality

Resorts & Luxury Villas

Resort and villa developers choose the 90mm series for large sliding windows that connect interior spaces to outdoor areas — balconies, pools, and gardens — without visible frame bulk.

Commercial

Commercial Facades & Showrooms

Large commercial facades benefit from the wide profile's structural rigidity and the ability to accommodate full DGU glazing for building energy ratings and thermal comfort.

High-Rise

Towers & Multi-Storey Buildings

The 90mm profile's superior structural depth and 2.2mm wall thickness make it the specification of choice for high-rise buildings requiring certified wind resistance and watertightness.

90mm Double Sash

90mm Double Sash

Engineered for Every Detail

Glazing & Colour Options

Six Glazing Choices

Four Colour Options

Double Sash Precision Engineering

Ideal Applications

Other GBT Series

Ready to Order the 90mm Double Sash?