Block for window block and tackle sash balance

Details Block for window block and tackle sash balance Block for window block and tackle sash balance

E - Fixed Constructions

05

D

E05D 15/22 (2006.01) E05D 13/00 (2006.01)

Patent

CA 2650751

A block shaped to fit onto an end of a block and tackle window balance containment tube which controls excessive airflow into and out of the jamb channel of the window frame to assist with the insulating function of the window frame and to substantially prohibit the accumulation of dirt and dust within the balance containment tube. The block is secured to the end of the balance containment tube by a rigid or semi-rigid retainer. The block itself may consist of either a pliable or rigid material.

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