Elastic cuffs for sound and vibration-damped installation of ERM duct fans. With 2 tensioning straps. ELM...: Made of plastic. ELM ... Ex: Made of antistatic material for use in potentially explosive areas.Article: ELM 14 Ex, Material: plastic, antistatic, Color: silver gray, Weight: 0.08 kg, Weight with packaging: 0.1 kg, Suitable for nominal width: 140 mm, Width: 140 mm, Height: 140 mm, Depth: 110 mm, Width with packaging: 240 mm, Height with packaging: 30 mm, Depth with packaging: 115 mm, Ambient temperature: 50 °C, Ex version: antistatic