RewardsConcord Chrome Concord Chrome Size (mm) Output Type Points Qty H1800 × L399 495W / 1689BTU SINGLE 286 -+ H1800 × L310 395W / 1348BTU SINGLE 287 -+ H1800 × L488 528W / 1802BTU SINGLE 317 -+ H1800 × L604 654W / 2232BTU SINGLE 350 -+