LEGO Black Door 1 x 4 x 6 with 3 Panes and Transparent Black Glass and Handle (76041)

LEGO Black Door 1 x 4 x 6 with 3 Panes and Transparent Black Glass and Handle has been used in at least 9 LEGO sets over the past 21 years, since it was first used in 2003. You can also find this part in at least 4 other colors. It has a design ID of 76041 which can usually be found molded into the bottom of the part.