3-3/4" ID Torsion Springs w/ Cones - Commercial, Heavy-Duty, High Cycle .207 Constructed from durable cast aluminum

Constructed from durable cast aluminum

3-Button Indoor Control Station

177" #7 Wire)P328 - 28" Plug-End Spring (

allowing manual operation during power outages or emergencies

3-3/4" ID Torsion Springs w/ Cones - Commercial, Heavy-Duty, High Cycle .207 Constructed from durable cast aluminum3 3 4" (3. 75" Inch) Inside Diameter Commercial Torsion Spring with installed Cones Commercial Torsion Spring with Cones Engineered for Heavy Doors, Continuous Operation & Long Service Life Designed for demanding commercial and industrial applications, this heavy duty torsion spring delivers smooth, reliable operation for large overhead doors in high traffic environments. Made from durable oil tempered steel, it is built to handle frequent daily