Reptile GU10 Halogen Dome Fixture with 54″ AC cord and switch by Carolina Custom Cages will allow you to use the increasingly popular GU10 halogen basking bulbs. This fixture is great for reptile basking requirements in a variety of installations. Very compact; 3-1/2” overall height and 4-3/8” diameter. This gives greater flexibility in planning your habitat’s basking areas. The ceramic socket securely engages GU10 halogen bulbs (much safer than the tiny pin MR11 types). Fixture can be mounted underneath a screen top or solid top with the 3 holes in reflector’s hub using the UV / heat resistant zip ties, screws, nuts & bolts provided in the box. Fixture can also be securely fastened on top of a screen mesh with 3 holes in the rim of the reflector using the zip ties. Their basking heat output is much more focused than traditional basking bulbs; this allows you to use lower wattage bulbs; better efficiency, economy and effectiveness! We offer 20w, 35w, 50w and 75w halogen basking bulbs separately; as well as Reptile Digital IR Surface Thermometers. A proprietary design by Carolina Custom Cages; a division of Carolina Designer Dragons, Inc.