BUD Industries NBX-32932-PL ABS Plastic Internal Panel, 18-7/32" Length x 14-1/4" Width x 5/32" Thick, for NBF Series Boxes Used with NBF series NEMA Box Fits enclosure: NBF-32032, NBF-32132, NBF-32232, NBF-32332, NBF-32432,NBF-32034, NBF-32134, NBF-32234, NBF-32334, NBF-32434 Easier prototyping Faster, less costly infield assembly Measures 18-7/32" length by 14-1/4" width by 5/32" thick