Its angular design made of steel sits directly on the ceiling and sets discreet accents. The Giyan surface-mounted light integrates effortlessly into the interior style of an apartment or is suitable for stylish shop lighting. What does it mean to set of 5?It simply means that there are five lights, each with the separate quantity indicated, in the order & packaged together. If you have any questions about our products, please contact us and we will get back to you within 24 hours. Product Size 1-light Size: L 10.5cm x W 10.5cm x H 10cm / L 4.1″ x W 4.1″ x H 3.9″ (Power~12W) 2-lights Size: L 20.5cm x W 10.5cm x H 10cm / L 8.1″ x W 4.1″ x H 3.9″ (Power~24W) 3-lights Size: L 29cm x W 10.5cm x H 10cm / L 11.4″ x W 4.1″ x H 3.9″ (Power~30W) 4-lights Size: L 22.5cm x W 22.5cm x H 10cm / L 8.9″ x W 8.9″ x H 3.9″ (Power~48W) Details Material: Iron, Steel, Aluminum. Light source: Integrated LED. Kelvin range: Warm Light (3000K), Neutral Light (4000K), Cool Light (6000K). Voltage: AC 110-240V Mounting: Ceiling Environment: Indoor Moisture resistance: IP 20 Damp-rated not waterproof, for indoor use only. Finishes: White, Black. Wiring: Hardwired. Control: Compatible with common wall switch (not included). Certification: Compatible with North America, Saudi Arabia, Europe, Australia Certification Specifications Installation Instructions