Comparison : Item # 12,549, Brass 272 H80 Rectangle Tube 1x0.5x0.062x12"
Item # 12,550, Brass 272 H80 Rectangle Tube 1x0.5x0.062x24"
Item # 12,551, Brass 272 H80 Rectangle Tube 1x0.5x0.062x36"
Item # 12,552, Brass 272 H80 Rectangle Tube 1x0.5x0.062x48"
Item # 12,553, Brass 272 H80 Rectangle Tube 1x0.5x0.062x72"