This 42"-high pet gate is the tallest available and will even keep a Great Dane at bay. The gate is made from sturdy powder-coated carbon steel and its spring-loaded tension rods create a stout, stable barrier that thwarts the largest canine breeds. The gate door closes automatically and it has a built-in battery powered alarm that beeps to notify you if something impedes its closing. The 2 1/2" spacing between slats prevents breakouts while providing pets a clear view so they feel less confined. The gate adjusts to fit hallways and doorways that are 32" to 42" wide. Requires two AA batteries. 42" H x 32"-42" W x 4" D. (25 lbs.)