Variable Torsion Spring, 2" x .250 x 28" to 34". Left Wind. Lifts 131-160 lbs. on a 7' High Door.
$186.97
The same variable spring is suitable for 8-foot high doors weighing 146 to 158 pounds. Rated at an estimated 10,000 to 13,000 cycles.
NOTE: PATENT PENDING.
***Please allow 4 to 6 weeks for delivery as we endeavor to provide the highest quality products.***