SmartPlug Weather Door - Vertical One Size. SmartPlug plugs self-align with these receptacles and have an automatic lock system when engaged. The push in design provides self cleaning for the pins and clips which insures clean power transfer.Compatible With:SmartPlug 30 and 50 AMP Receptacles Features:Weatherproof cover designVertical positioningSold as an IndividualWARNING: This product can expose you to chemicals which are known to the State of California to cause cancer birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov. Specifications for SmartPlug Weather Door: Manufacturer: SmartPlug Color: White Package Contents: SmartPlug Weather Door SmartPlug RDPWP: Weather Door - Vertical One Size