Block and tackle style for double hung windows 2210

Thanks for contacting SWISCO. Take a look at our Series 370 Channel Balances. Based on your stamp number your balance should be 23" long, but confirm this by measuring the length of the metal channel (but not including where the end attachments extend beyond the channel). If the balance is 23" long, then you would select the S370-23 with a stamp option of 2210. 

OK great, thanks for the confirmation. You can purchase the S370-23 from the link in this sentence. Just remember to select the stamp option of 2210. You will be able to order the exact amount you need and to choose your preferred shipping time. If you need anything else just let us know!