Window Invisible Grill — Bonakal
When it comes to invisible grills in Bonakal, the local climate plays a decisive role in material selection.
Bonakal's Khammam's high humidity and forest-belt moisture make 316 Marine Grade SS invisible grills the safest choice.
This is precisely why hundreds of residents and builders in Bonakal choose GCM Invisible Grills — the only manufacturer
supplying AISI 316 Marine Grade Stainless Steel invisible grills directly to Bonakal without middlemen.
Our 316-grade SS wire is the same alloy trusted in offshore marine structures and medical-grade equipment, offering
superior resistance to chloride-ion corrosion — a critical factor in Khammam's climate. The result is a
rust-free, maintenance-free invisible grill that retains its structural integrity and visual clarity for 20+ years.
Beyond material quality, GCM provides end-to-end service in Bonakal: free site survey, precision measurement,
custom fabrication at our Karmanghat, Hyderabad plant, and professional installation within 24–72 hours.
Every installation comes with a 5-year material & workmanship warranty. To book your free survey, call
9912399224 or WhatsApp us now.
Choosing the Right Grade for Bonakal
GCM supplies two wire grades for invisible grills in Bonakal. The right choice depends on your floor level,
proximity to water bodies, and long-term budget:
| Specification | 304 Grade (Standard) | 316 Marine Grade (Best) |
|---|
| Corrosion Resistance | Good | Excellent (Marine-rated) |
| Alloy | 18% Cr, 8% Ni | 16% Cr, 10% Ni, 2% Mo |
| Salt-Air Resistance | Moderate | Outstanding |
| Ideal For | Lower floors, dry climate | All floors, humid/coastal areas |
| Price per sq ft in Bonakal | ₹120–140 | ₹160–200 |
| Expected Lifespan | 10–12 years | 20+ years |
| Warranty | 3 years | 5 years |
For apartments above the 5th floor and any location near lakes, rivers, or coastal areas in Bonakal,
GCM strongly recommends 316 Marine Grade SS for long-term value and zero-maintenance performance.
