| Specification Attribute | Technical Detail |
| Brand | Anchor |
| Product Code / Item Code | 21474 |
| Generic / Common Name | GI Boxes (Concealed Galvanised Metal Boxes) |
| Modular Capacity & Format | 8 Module (8M) – Rectangular / Square Matrix (4x2) |
| Material | Heavy-Gauge Galvanised Iron (GI) |
| Protective Coating | 120 GSM Zinc Galvanisation |
| Dimensions (Box Envelope - L x B x D) | 132 x 135 x 56 mm |
| Packaged Dimensions (L x B x H) | 10.0 x 5.0 x 5.0 cm |
| Product Weight | 0.1 kg |
| Internal Depth | 56 mm |
| Unit Packaging | 1 Piece |
| Earthing Provision | Integrated Dedicated Earth Terminal Screw |
| Mounting Style | Concealed In-Wall Flush Mount (Brick, Concrete, Drywall) |
| Target Applications | Master Bedrooms, Living Rooms, Boardrooms & Executive Desks |
| Best Used For | Rough-in Housing for 8M Rectangular Switchboards, Regulators & Sockets |
120 GSM Zinc Galvanised Protection: Engineered with a certified 120 GSM zinc barrier that prevents rust, wall dampness oxidation, and masonry corrosion over extended building lifespans.
8-Module Rectangular (4x2) Format: Designed specifically for rectangular 8M modular grid plates, providing a balanced, compact footprint ideal where horizontal space is constrained.
Extra-Deep 56 mm Clearance: Features a 132 x 135 mm profile with a 56 mm internal depth, accommodating heavy wire looping, neutral blocks, and deep modular inserts like fan regulators and 20A sockets.
Built-In Low-Resistance Earth Terminal: Features a dedicated factory-fitted grounding screw to ensure positive fault-current earthing and prevent shock hazards.
Anti-Deformation Heavy-Gauge Construction: Precision-stamped with rigid structural edges and high-quality threaded lugs to withstand mortar pressure and deliver clean, strip-free faceplate mounting.