nVent Hoffman VTS1597 This shelf, that is mounted on 19" profiles, can be extracted to allow for the inspection and maintenance of installed components. It has ventilation openings to ensure for proper air circulation within the enclosure.Feature: telescopic zinc plated steel shelf with ventilation openings, to be mounted onto 19-inch profilesAdvantage: the shelf can be extracted easily allowing better access to the mounted components or equipmentBenefit: the shelf can be extracted allowing the installed components to be inspected and maintained easily; the ventilation openings does not prevent the enclosure's air circulation which reduces the risk of potential hot spotsMaximum load rating: 500 N (112 lb-f)