Specification Brand : Uni Filter Label : Uni-Gard, Inc. Manufacturer : Uni-Gard, Inc. MaterialType : carbon, plastic, acrylic, Made of LEXAN polycarbonate material. NumberOfItems : 1 PartNumber : UG-3SC ProductGroup : Home Improvement ProductTypeName : BUILDING_MATERIAL Publisher : Uni-Gard, Inc. SmallImage_Height : 75 SmallImage_URL : https://m.media-amazon.com/images/I/41E1u0fO2AL._SL75_.jpg SmallImage_Width : 54 Studio : Uni-Gard, Inc. Title : Uni-Gard, Inc. UG-3SC, Large SMOKED-CLEAR Thermostat Guard with Key Made of LEXAN (Polycarbonate, more durable than acrylic/plastic) to PREVENT TAMPERING.