Our original tall Guardshack Line of enclosures is perfect for taller PVB’s (pressure vacuum breaker) installations (M Series) or large diameter "N" pattern backflow assemblies (NP Series). These situations call for a taller enclosure, but not necessarily longer or wider. These cages feature our signature rounded design which provides both superior strength and safety over square cages, without any sharp corners. Our tall enclosures come in 8 standard sizes to protect a wide range of backflow assemblies and other assets. They consist of hinged bodies and hinged gates which maximize the usable internal space and mitigate the weight of the cages.