Zoo Meds most popular Clamp Lamp fi xture is available in three sizes: 5 1/2 inch (14cm) 8 1/2 inch (22cm) or 10 inch (25cm) diameter domes. Made of heavy gauge painted aluminum. All three models have a ceramic socket and can be used with the Clamp Lamp Safety Cover to protect your bulbs animals and home. Upto 150 watts