normally your stair case is at least 3'-4' wide, that's 36"-48".
http://www.sears.com/shc/s/p_10153_...gerators&sName=French Door Refrigeratorsmv=rr
Samsung 29 cu. ft. Bottom-Freezer Refrigerator ENERGY STAR®
Dimensions:
Standard or Counter Depth: Standard Depth
Depth w/ Handle (in.): 35.625
Depth w/o Handle (in.): 31.75
Height to Top of Case (in.): 68.5
Height to Top of Hinge (in.): 69.75
Width w/ Door Closed (In.): 35.75
Width w/Door Open 90 Degrees (In.): 47.125