Electrical box extension

The ornamental design for an “electrical box extension,” as shown and described.

FIG. 1 is a top-left-front perspective view of a first embodiment of an “electrical box extension” showing my new design;

FIG. 2 is a front elevational view thereof; the back elevational view is a mirror image thereof; and,

FIG. 3 is a left elevational view thereof; the right elevational view is a mirror image thereof.

Patent	Priority	Assignee	Title
11557888,	Feb 14 2019	ERICO International Corporation	Adjustable depth electrical wall mount ring
11739882,	Nov 27 2019	ERICO International Corporation	Bracket for adjustable-depth mounting of electrical boxes
D651174,	Feb 01 2010		High Capacity Electrical Outlet
D679119,	Sep 26 2011	CROWN POINT CABINETRY CORP	Slat-wall shelf cover
D685214,	Sep 26 2011	Crown Point Cabinetry Corp.	Slat-wall shelf cover
D701173,	May 09 2012	Brainwave Research Corporation	Electric device mounting bracket
D711833,	May 10 2012	Brainwave Research Corporation	Electric device mounting bracket
D883242,	Nov 26 2019		Video transceiver
ER605,

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