"Brad, I just wanted to write and tell everyone thank you for the very professional service I received at Suburban. From the first meeting with Brian at my house, to the final phone call from the... » more
- Doris Moreno of Davenport, Iowa


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Block and Tackle Balance System

The block and tackle system utilizes a high-density nylon cord pulley action which is attached to a moveable block that travels up and down within a metal chamber. Tension from a heavy duty coil spring at the top of the block creates the proper resistance necessary for smooth operation of the window sash.

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