Adapts Allied Moulded FB-3, FB-4, FB-3DB FB-4DB, FB-3N and FB-4N to industry standard concrete junction boxes with 4-1/2 to 4-9/16 in ID|Closed cell rubber gasket|Installed floor box assembly meets UL 514C scrub water exclusion test|Quick and easy installation with fewer floor box and device components|Floor box comes with a standard TR tamper-resistant receptacle, 15 A, 125 VAC with ground (NEMA configuration 5-15R)|Allied Moulded floor box assemblies can be adapted to many standard PVC concrete junction boxes