Camera enclosures adapt surveillance cameras to hostile places: outdoor housings that seal a camera against rain and dust, heated and blower-equipped models that keep the window clear through winter and condensation, and vandal-resistant and dome covers for locations where the camera itself is a target. The camera is chosen for the image; the enclosure is chosen for the site.
Enclosures are matched purchases: most are designed for specific camera families and sizes, so start from the camera model and the manufacturer's compatibility listing rather than the enclosure's dimensions alone. Check the environmental rating against the mounting location - eaves, poles, and coastal or industrial air are different problems - and remember heaters and blowers need power planned to the mount point. Order the matching bracket in the same purchase; the enclosure without its mount is a shelf item. COLAMCO quotes camera housings and mounts with the surveillance cameras they protect for business, government, and education security installations.