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S350-28 28" Series 350 Channel Balance

I have 28" SERIES 350 CHANNEL BALANCE that are 2730. They have broken over the last ten years . It is always the string. If I go to a 2740. Does the sting increase in strength ? or just the spring

Hello, my windows have the 2740 28" S350 window balance installed. Several windows have become too stiff to close down! I weighed the sash and found it to be 19lbs, which qualifies for either the 2730 or 2740. So I ordered the 2730 and 2740 to try them out. The best seems to be in between. So the qu ... (cont.)

Hello I need to fix hard to open/close Sunair window 28" channel number 2740 AF BSI. Please see pics and advice on various components. For some the string is broken, do i need to buy the whole channel or should I replace the string inside the channel? Thanks Gagan

Swisco, I ordered new balances for all of my windows (order S350-28) and replaced all. After a couple days one of the new balance cords snapped. I ordered a new one and paid for it. Than a couple days later another one broke. I called and was sent a replacement. Just this weekend a third ... (cont.)

# stamped on old part 2730 We need a quantity of #6 Michael

28" window balance, #2740, from a SunAir window. What part do I order to replace this? Thanks, Tony

Hello, I have to replace a 2790 balance. It's 28" in length and the window is 31 lbs. Attached are pictures. thank you.

I need to replace channel balance for a sun air window brand the number stumped in the part is 2720 P the metal part is 28 inches long as well i need a window lock and 2 top casing. Can you help me please.

Hello, I need to replace the balances on my windows. I have 2730 and 2740 balances, length is 28". I've included pictures of both the top and bottom of each balance.

I am replacing a Caldwell Ballast/sash product. I believe I have I.D.'d it as your part number 350.The length stamped on it is 1 inch less that the length I came up with using your measuring diagram which is basically the metal portion. Just want to be sure I'm getting the correct one. Also do you k ... (cont.)

This channel balance is for a non-tilt window. It is 1/2 inch in width and 28 inches in length. It says 27 4 HO Caldwell. Thanks Donny

The metal portion of the balance is 27" long. I need to order a pair to replace failed units in my son's home (San Jose, CA).

Please see photos attached. Original post appears to be lost. Length is 28 inches, and width is 9/16 inches. Imprint is 27 3 LN CALDWELL. Looks like this is your 2730 part... Please confirm

Hello, I have had 3 of the 4 channel balances from this order fail. First one lasted 2 days after I installed it, 2nd one maybe a week, and third one failed almost immediately after installation--just tonight. Please see attached pictures. Basically, the same failure pattern in all 3: me ... (cont.)

Need to find replacements balance for my window. One window had the stamp on it, but both balances of this one doesn't.

I am replacing side channels. I need 28 inch metal size + shoe and top. What stamp should I buy? I have a Kauf man and Broad installed installed windows. The stamp on it shows "27 4 HP Caldwell" Please let me know. Thanks, -Raj

Hi, I'm pretty sure this is what I need. The channel section is 28". I believe the stamp is referring to a 2740. Please see attached photos to clarify. Then I can order a pair. Thanks for your time. David I like your website. Well done.

Looking to replace 2 sets of channel balances. 28" long Stampled code 27 500 Caldwell

I'm pretty sure I will need to replace a pair of old channel balances with the series 350, but cannot be sure of the "Sash Weight Range". The only identifying stamp on the channel is "27 4 1L CADWELL". I'm going to guess I'll need the "2740", as my window falls into the 19-26 lbs range. Please ... (cont.)

Hello, I would like to replace the two channel balances in a sash window. I have attached pictures of the existing balance. The metal part is 28" long (excluding the plastic end caps) and is stamped "2730". The window is an aluminum frame, original install in a house built in 1986 in California. ... (cont.)