ast childproof double door security lock, adjustable keyed french door lock | lockout device for knobs and handles of double doors, prevent kick ins, kids proof barricade, bigger adjustment, matte black is up for auction in Tools & Home Improvement. The current bid is $1.50, 96% below the $36.99 MSRP, in New/Like New condition. This auction has ended — similar items appear in live auctions regularly.