The all aluminium Parkville letterbox is easily installed in fencing. It comes with a lock and key and is available powdercoated.
400 x 240 [this is the letterbox front]
Depth is 300
slot for mail is 158mm x 36mm
Rear of letterbox is 345mm high x 185mm wide
incl lock and key is 145mm wide x 175n is also available in a larger size to fit into a brick pillar
Refer to accessories catalogue for pricing