Mercer single hung window balance rod marked 32 6 EW CMC 10

Thanks for posting. Confirm that the metal channel, not including the nylon fittings at either end, is 33" long. If so, see either our S380-33 or S385-33. The only difference between these two balances is the 'depth' of the bottom nylon shoe, so compare both with your old hardware to see what matches best. You will need a stamp option of 3260. 

Sure thing! If you  have any questions, please let me know. I'll do my best to help you with whatever you need.