23 in. Window Block and Tackle Sash Balance

This window block and tackle sash balance will offset a window that weighs between 5 and 8 pounds. It is sold without the end guides. The correct guides will need to be purchased separately. All window block and tackle sash balances are best bought in pairs.”,”highlights”:[“Heat-treated steel spring for durability”,”Support window vent weight of 5 – 8 pounds”,”Other lengths and window weight allowances are available”