ABS plastic with UL 94V-O flammability rating suggested service temperature of -20 to 70 degrees C. Comes with close fitting interlocking lid and assembly hardware. Made of ABS plastic. Black recessed finish. External measures 4-19/32" length by 4-19/32" width by 2-23/64" height; internal measures 4-21/64" length by 4-21/64" width by 2-5/32" height.
I ordered three of these boxes, all three were packaged separately and one had no screws for the lid. Not impressed with the delivery and very disappointed to have to look for new screws for the lid.