[Specifications] Body / Joint Material: HDPE (high density polyethylene), Heat Resistant Temperature: -4°F to 154°F (-20°C to 70°C); Condensation Cover, Water Container Fixing Hook, Water Plate Material: PP (polypropylene); Heat Resistant Temperature: -4°F to 16.4°F (-20°C to 70°C); Size: (W x D x H) 13.4 x 1.6 x 12.4 inches (340 x 40 x 315 mm; Weight: 2.6 lb (1.2 kg) when filled; The weight may affect height adjustment or slow oscillation. Compatible fans: Compatible with fans with motor diameter between 3.9 - 4.7 inches (100 - 120 mm).Cannot be installed on fans with specialized motor parts. Usage time: This product requires freezing for 6 to 8 hours and can be used about 3 hours.(Varies depending on usage conditions and environment.)