• 3" (3 inches): This likely refers to the width of the frame, thickness, or size of the design pattern.

• Plain: No intricate design — simple, basic grid or mesh without decorative elements.

• Jali: A perforated screen or lattice, traditionally made from wood, stone, or metal, used for ventilation, light filtration, and privacy (common in Indian and Middle Eastern architecture).

So a "3-inch plain jali" typically means a simple lattice or grill with 3-inch spacing (or frame) without decorative carvings.

• Metal jali (for gates, fences, ventilation grills),