System Window Glass Options — Thickness, DGU & IGU Pricing
What this page covers: DGU/IGU page: 20mm DGU line in the dropdown = priced adder vs 6mm base — aligns with IGU supply reality. Typical installed range: ₹1190–₹2880/sq.ft (before GST).
The system window glass line item is not “just pick DGU from a list.” For certified systems, the glass is specified as a package weight and deflection the frame, hinges, and stays were designed to carry. This page’s ₹1190–₹2880/sq.ft price range (before GST) is glass-led: 6mm base with DGU / 8/10/12 / laminated in the same tool. Product id: 31mm system sliding (glass / IGU focus) — see 50mm Euro casement for vent-heavy sides.
| Build-up | What it buys |
|---|
| DGU (twin lites + spacer) | Acoustic and thermal over single light |
| Triple / laminated safety | Human impact, security, and STC where specified |
Glass Upgrade Impact on System Window ₹/sqft (2026)
Supply and install on this page typically runs ₹1190–₹2880 / sq.ft (before GST). Includes: DGU/IGU page: 20mm DGU line in the dropdown = priced adder vs 6mm base — aligns with IGU supply reality. Market rates for certified system work in India often span ₹1,150–3,000/sq.ft — the table below reflects this page’s calculator and product focus.
| Spec band |
Indicative ₹/sqft |
What is included |
| Entry system | ₹1,190 – ₹1,663 | 6mm, standard powder, basic hardware, metro install |
| Mid premium | ₹1,663 – ₹2,238 | DGU / 8–12mm / laminated as spec, better rollers, coastal-ready option |
| High spec | ₹2,238 – ₹2,880 | Heavy IGU, import hardware, large panels, difficult access / tower labour |
System type quick comparison
| Type |
Typical ₹/sqft (₹1190–2880) |
When architects specify it |
| 31mm system sliding (glass / IGU focus) (system sliding) | Glass-led BOQs use most of the strip when IGU is wide-scale | Balcony, living screens — 30/31/35 Gulf / 40mm minimal class stacks |
| 50mm Euro / 52mm Gulf casement | Often mid–upper vs sliding on one elevation | System casement |
| Slim / luxury system | Upper spec band | Slim system |
| Ad-hoc “normal” make | Often below ~₹1150/sqft — not same class | System vs normal |
Glass on System Sliding — Series Limits (Honest)
| Sliding series | Typical max glass | When to upgrade series |
|---|
| 27mm Domal | Single 5–6 mm | Never DGU on large panel |
| 29mm premium | DGU to ~20 mm | Standard flat sliders |
| 35mm system | DGU + laminate options | High-rise, daily balcony |
| 38/40mm minimal | Heavy DGU / triple | 12 ft height walls |
Calculator on this page follows 29mm sliding glass adders — same dropdown behaviour as premium sliding.
Why Glass Choice Hits Sliding More Than Casement
Simple answer: Sliding panels hang on wheels — heavy DGU on Domal bends tracks; system series are rated for the glass you pick in the dropdown.
Best for India: Bedroom 3-track — 6 mm + mesh; living/balcony system sliding — DGU for noise and heat.
Triple IGU only when acoustic brief demands it — pair with 40mm minimal on tall openings, not Domal.
