The Series 320 extended travel block and tackle window balance is somewhat less common balance than our standard Series 400 or Series 300 block and tackle balance. These balances may look similar, but there are some key differences that make it so these balances are not...
What is a Coil Spring Balance Coil spring window balances are a type of constant force window balance. These balances work by using stainless steel, coiled spring as a counterbalance. This type of balance system is designed to be more...
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