Hammond 18P3921 39 x 21 In White Steel Inner Panel, Fits 42-by-24

The 18P3921 is a 39 x 21 in white-finished steel inner panel for 42 x 24 in enclosures, part of Hammond's 18P Series of inner panels for 1418, 1447, PJW and PHW wallmount enclosures. It gives panel builders, electrical contractors and OEM engineers a dedicated surface for mounting components inside the enclosure.

According to the series specifications, steel panels are 12 gauge steel finished in white, and some larger panels in the series are 10 gauge. Larger panels in the series have two or four formed flanges; the drawing for this part shows a 0.75 in formed depth. The 39 x 21 in size is listed in white steel and galvanized steel (18G3921) only; no stainless or aluminum version appears in the ordering table.

The panel measures 39.00 in (991 mm) long by 21.00 in (533 mm) wide and is listed for enclosures 42.00 in (1067 mm) high by 24.00 in (610 mm) wide. Hammond's drawing shows 6 mounting holes of 0.50 in diameter, spaced two 18.63 in pitches along the 39.00 in length; 19.25 in across the width, and a 0.10 in material thickness. Shipping weight is 28 lbs (12.70 kg).

Panel mounting hardware is not included; the series notes it is provided with the enclosure. The 18P3921 is RoHS and REACH compliant and ships in a box. The same panel size is also listed as 18G3921 (galvanized steel).