5/8" Channel Depth. The 300 Series is a standard block and tackle window balance for sideload / non-tilt window applications. Includes the balance and pre-installed top and bottom guides only.
.If your metal channel does not match exactly, please contact us before you place your order. To measure the balance, measure the length of the metal channel only. The 300 Series is a standard block and tackle window balance for sideload / non-tilt window applications.