channel balance

Question

Hi, My windows are Kinro vinyl single hung. The channel balance looks identical to your 26" series 385. The markings on my channels are 26 4 and a very faint B.S.I and a small letter L. The window sash measures 28 5/8" high x 44 1/4" wide x 1" deep. What weight option will I need to order?

thanks, gary

Tom · Accepted Answer

Hi, Gary. Your stamp implies that you have a 27" balance with a 2640 stamp option. You would then need to identify your Series. If you believe your balance looks like S385-27, be sure to check out the difference between S385 and S380, which is a single measurement of the balance shoe:

Comparison of 15-004 and 15-005

Once you have identified whether you need S380 (with a 15-005 shoe) or S385 (with a 15-004 shoe), measure the length of the metal channel (and just the metal channel) to verify the length you need for your balance. It should measure 27". You can double-check the stamp option by removing the window and weighing it. For a 2640 stamp, the window should weigh 19 to 26 pounds. Let me know if you need help to verify all this.