Answer:
The Udyogi UI 1211 has a net shell weight of approximately 320 g (gross shipping weight 0.42 kg), a headband adjustment range of 530 mm to 610 mm, a 48 mm peak, a 36 mm internal vertical clearance, and a 90 mm wearing height.
The Udyogi UI 1211 industrial safety helmet is manufactured with the following verified dimensional and structural specifications:
- Headband Circumference: 530 mm to 610 mm (53 cm to 61 cm) adjustable universal range.
- Peak Length: 48 mm forward extension to shield the eyes and face against overhead falling objects.
- Internal Vertical Clearance: 36 mm between the crown harness and shell interior.
- Wearing Height: 90 mm.
- Harness & Strap Dimensions: 20.51 mm cradle harness width and 19.85 mm chin strap width.
- Weight: Shell net weight of approximately 320 grams (shipping weight listed at 0.42 kg).
- Accessory Slot: 30 mm universal lateral attachment slots.
