Material: armor plate or SGCC galvanized or stainless steel Size(mm)(D*H*W): (a.400*365*780).(b.420*365*780).(c.450*365*780).(d.550*450*800).(e.610*465*800).BTU: (a. 7000-13000) (B. 7000-15000) (c. 7000-18000) (d. 13000-24000) (e. 18000-34000)Load(kg): a,b,c)60+60;( d,e)75+75. Link: scerws.Surface: polyester powder coating