FeaturesRevolutionary patented design expands from 1 to 3-1/2 in for while-in-use needsHeavy duty die cast metal constructionPatented Quick-Fit keyhole mounting system allows installation in under a minutePre-configured for GFCI with patented Knockout technology for alternate devicesLockable tabPremium powder coatSwivel locking device keeps the cover securely shut and tamperproofExpandable design helps ensure weather resistance while-in-use8-in-1 configurationNEMA 3R ratedExpandable coverTAYMAC® metal 8-in-1 horizontal in-use deep low profile coverFeatures a swivel lock to help ensure that the cover remains locked and tamper resistant in use and not in use applications