Classic letterbox with letter slot in the roof The Allux 400 letterbox is a classic, square letterbox with a side-hinged door. Letters are inserted via the roof, which can be raised as a whole. The sloping roof flap makes it easier for rainwater to run off or prevents unwanted objects from being left on the letterbox. The door for removing the mail is fitted with a side stop and secured with a cylinder lock. If required, the cylinder lock can also be replaced with a Ruko security lock. The letterbox is suitable for mounting on the wall as well as on a standing star. The matching standing star can be ordered at the same time via the accessories.