Frequently Asked Questions

Our invisible grills will not rust. We use exclusively SS 316 marine-grade stainless steel, which contains molybdenum for superior resistance against pitting and rusting. The wire core is coated in a durable nylon/membrane layer which acts as an extra moisture barrier, making them highly suited to Hyderabad's heavy monsoon rains and high-temperature summers.

Each individual cable in our invisible grill setups is tensioned to support a load capacity of up to 400kg. This ensures that children, adults, or pets cannot push the cables apart or snap them under accidental impact.

For standard balconies and child safety, we recommend a gap spacing of 2 inches (50mm) to 3 inches (75mm). For pet safety (especially cats and small dogs), we suggest an ultra-narrow spacing of 1.5 to 2 inches (38mm to 50mm) to ensure pets cannot slip their heads or bodies through.

While their primary purpose is fall prevention (safety), invisible grills act as a strong deterrent. The high-tensile SS 316 steel wires cannot be cut with household scissors or pocket knives. A specialized heavy-duty wire cutter is required to sever them, making silent, forced entry extremely difficult for intruders.

Unlike traditional iron grills that trap residents and require a gas cutter to remove, invisible grills are designed with emergency evacuation in mind. The cables can be snipped in seconds using a wire cutter (which we recommend keeping in an accessible location), facilitating rapid escape or rescue access.

No, John Invisible Grills provides 100% free site visits, consultations, and measurements across all locations in Hyderabad. Our local safety engineers travel from Kukatpally directly to your doorstep.

For a standard balcony (approximately 100 to 150 sq ft), the installation is typically completed in 3 to 5 hours. Larger spans or multi-balcony projects may take a full day. Our teams work efficiently to minimize disruption.

Yes. We install invisible grills on sliding windows, UPVC casements, large French windows, and sliding glass partitions. The mounting tracks are slim (only about 2 inches wide) and are mounted on the outer concrete frame, ensuring your windows and sliding screens can operate smoothly without blocking.

Yes. Most premium apartment complexes and high-rises in Hyderabad recommend invisible grills over traditional iron grills. Because they do not block natural light or alter the building's exterior façade, they maintain a clean, uniform look for the property.

Our premium nylon-coated SS 316 invisible safety grills have a lifespan of over 15 to 20 years. They do not fade under sunlight, scale under rain, or lose their tension over time.

Yes, we powder-coat our high-grade aluminum anchoring tracks in various finishes including Charcoal Gray, Off-White, Dark Brown, and Black, matching your window frames or balcony railings perfectly.

They require zero maintenance. Unlike traditional iron grills that need periodic rust-brushing and repainting, invisible grills only need to be wiped down with a damp cloth occasionally to remove dust.

Pricing is calculated on a per-square-foot basis, which covers the SS 316 cables, aluminum tracks, anchor bolts, and professional installation. Our headquarters in KPHB, Kukatpally manages local assembly, allowing us to offer highly competitive pricing across Hyderabad with no middleman margins.

We are based in KPHB, Kukatpally, Hyderabad. For Kukatpally and adjoining areas like Miyapur, Nizampet, and Kondapur, we can reach you within 1-2 hours. For other parts of Hyderabad (like LB Nagar, Uppal, or Alwal), we coordinate visits within 3-4 hours or on the same day.

Yes, we customize our installations for open terraces, rooftop penthouses, internal duplex voids, and open-sided staircases. We fabricate custom framing brackets to anchor the cables securely on any surface.