1.easy assemble 2.the size can be customized 3.the weight is light 1.type A is stainless steel and type B is steel Our regular size is as follows:LENGTH: 18'', 24'',30'',36'',42'',48''WIDTH: 12'',15'',18'',24'',30''HEIGHT: 32'',34'',36'',40'',42'',64'',68'',72'',80'',84'' new type stainless steel morden adjustable home and office rack