The 7-350D is a 2U aluminum open rack chassis panel from the Hammond 7- Series, intended for engineers, integrators and lab technicians who need to mount custom electronics into a 19 in rack. The formed, open design makes it a practical base for building front panels, instrument assemblies and prototype enclosures where off-the-shelf boxes do not fit.

Construction is 5052H32 aluminum, listed as 0.06" thick in the series features and 0.064" on the part drawing, giving a lightweight, corrosion-resistant panel with a natural aluminum finish that can be painted, labelled, drilled or machined as required. The open format allows connectors, switches, controls and printed circuit boards to be added without cutting away existing structure.

Overall dimensions are 3.47 in (88 mm) high, 17.00 in (432 mm) wide and 5.25 in (133 mm) deep, occupying 2U of rack height. The rack flange measures 19.00 in (483 mm) across and carries four 0.25 x 0.375 in (6 mm x 13 mm) slots for mounting; corners are formed with a 0.12 in (3 mm) radius. Mounting hardware is not included with 7-350D, so rack screws or cage nut hardware should be specified separately. Shipping weight is 1 lb (0.45 kg).

The 7-350D is TAA-compliant and manufactured in North America (country of origin CA) in an ISO 9001 certified facility, and is listed as RoHS compliant, REACH compliant and USMCA compliant. It is part of the Hammond Legacy Portfolio, offered for over 50 years.