• Rippled fins produce a rippled air flow pattern for maximum heat transfer.
  These ripples also assure permanent "fin-tube bond" through greater
   flexibility under expansion and contraction.
• Staggered tubes create air turbulance to give maximum air side heat    transfer.
• Mechanical expansion bond insures permanent metal to metal contact.
• Fin collars are drawn wide and smooth to provide maximum contact area.
• Steam baffle disperses entering steam thereby preventing blow through or   short circuiting and ensuring equal steam pressure throught the supply   header.