One-Size-Fits-All Backflow Cage! Pre-measuring your backflow device prior to installing the enclosure is..….. Old-School! In modern times one installs an Adjustable “One–Size-Fits-All” Lockdown Fortress with an Adjustable Concrete Form and Stakes…..…... Yes, the Locks, Identification Key Tag, Form, and Stakes are Included! BackFlow Armor is 30” Tall, 13” Wide and Adjustable from 28" to 51" Long! This is absolutely the easiest BackFlow cage to install!