hardware springs
holmes spring mfg p928c door extension spring
replacement springs for use with garage door hardware assemblies plug end type connector included two p928c springs can support up to 75 lbs two p728c p730c or p732c springs can support 90 to 150 lbs two p528c p530c or p532c springs can support 105 to 175 lbs two p328c springs can support 125 to 250 lbs dimension 30 5 x 2 x 2 in item weight 4 5 lbs sku orgl42646