Swinghandles for cabinets and large enclosures have always been a stylish solution to provision of low profile locking with good leverage for multi-point rod locking systems and it is worth considering the range of options that are now available for inserts or locks, with one or two keys, padlocking options and remote electronic security.
Materials now include Polyamide, zinc die and stainless steel. IP ratings of IP 65 are common so will suit the great majority of applications.