43" Non Tilt Block and Tackle Window Balance 5/8"

The 300 Series is a standard block and tackle window balance for sideload/non-tilt applications. 5/8" Channel Depth Balances are ordered based on length and stamp To measure the balance, measure the metal channel only. The stamp is located on the balance and is either pressed into the metal or printed on it. If the balance is not available, measure the height of the visible glass. This will be your length. Then remove and weigh your window sash on a bathroom scale and select your appropriate weight range. These measurements are crucial to the performance of the balance. The information is based on two balances per sash with no weatherstrip friction considered. AAMA Class 2 Verified Component Weight capacities are listed per pair of balances in pounds