NOMOYPET Heater Guard - Reptile Vivarium Light Heat Lamp Bulb Mesh Cover - Round, 4.8 x 6.7 in. Guard your heat source and protects your pet from burns Quick access door for easy bulb change and dual spring catch for added safety Generous cable gap for flush mounting Simple installation and maintenance. Screws are included Measures 4.8 inch diameter by 6.7 inch height,suitable for the most of bulbs