The galvanized steel mailbox manufacturer tells you that the general letter box pays attention to the five principles and five preventions. The five principles are safety, convenience, application, economy, and beauty; the five preventions are moisture, wind, lightning, rain and snow, and theft. No matter what kind of letter box, the overall form, appearance and overall design of the residence must be designed reasonably.

The galvanized steel mailbox manufacturer tells you that the general letter box pays attention to the five principles and five preventions. The five principles are safety, convenience, application, economy, and beauty; the five preventions are moisture, wind, lightning, rain and snow, and theft. The galvanized steel mailbox manufacturer tells you that no matter what kind of letter box, the overall form and appearance are in harmony with the overall requirements of the residential design, and it must not affect the lighting, ventilation and traffic of the residents.
The galvanized steel mailbox manufacturer tells you that outdoor letter boxes generally require the installation of rain sheds, and the location of the installation is very elegant. The drainage slope of the rain canopy must be greater than 3%, the length must be greater than or equal to the length of the letter box plus 0.5m, and the width of the overhanging letter box is 0.6 times the vertical distance. The galvanized steel mailbox manufacturer tells you that the area of ​​use should not be less than 8 square meters per hundred households, and the letter room should be reasonably laid out, easy to operate, and equipped with anti-theft, lighting and other facilities. Generally, cold-rolled steel plate or stainless steel is used, and the appearance should be smooth and flat, with uniform color, no burrs, cracks, scratches and obvious deformation are allowed, and the extreme deviation of the external dimensions should not be greater than 2mm. The galvanized steel mailbox manufacturer tells you that the main door lock uses a through-heart concealed lock, and the grid door lock should use a plate lock, and the parts should be rust-proofed. The door lock should be opened flexibly without jamming, and the shafts and holes should be well coordinated. In the locked state, the main door and the grille shall not be opened or damaged when subjected to a tensile force of 500 N.