Question: Is the Gravity Drop Automatic Dead Bolt mentioned in the May 1, 1988, Dear Dale column available for sectional garage doors?
Answer: According to Debi Hrboka of GDI, P.O. Box 2242, Oxnard, Calif. 93034, there will be a sectional door version of the Gravity Drop on the market by Aug. 1.
This version--called Garage Guard--can be seen on the Conejo Valley Design House, open daily except Mondays through July 10 at 3820 Castle View Drive, Agoura Hills.
Debi's husband, Deso Hrboka, devised a time-delay bracket with a built-in steel dead bolt that is designed to fit into a hole drilled in the concrete garage floor. As the door closes, the force of gravity drops the dead bolt into the hole, eliminating the play at the door's bottom edge.