The second configuration device is required for {HEAD ~ hooded type mailboxes} but, optionally, can also be installed on rearwardly flanged mailbox doors to provide {TAIL ~ a weatherproof installation} 
The second configuration device is required for { HEAD ~ hooded type mailboxes } but , optionally , can also be installed on rearwardly flanged mailbox doors to provide { TAIL ~ a weatherproof installation }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL