action spring hinges give closing action
from either direction. Energy is stored
in the spring as the door is opened, and
closes the door after it is released.
Spring tension is adjustable at any time.
Models are available for doors without
hanging strips, and sizes are made to
operate door weights, per pair, from 25
pounds to 70 pounds, in thicknesses ranging
from 3/4" to 1 3/4" (not all
thicknesses work with all models). Finishes
for models (070) are zinc plate, sprayed
brass and prime coat.