This is an NOS Unity #108L, LH (driver’s side)  spotlight exterior mounting bracket with mounting pad and set of hardware in the original factory box.  It fits the following White and White  GMC truck models:

1977	WHITE	FREIGHTLINER	0		225B	250B	108	108RH
1976	WHITE	FREIGHTLINER	0		225B	250B	108	108RH
1976	WHITE	ROAD XPEDITOR	SIDE ROOF	0	225B	250B	108	108RH
1975	WHITE	FREIGHTLINER	0		225B	250B	108	108RH
1975	WHITE	ROAD XPEDITOR	SIDE ROOF	0	225B	250B	108	108RH
1974	WHITE	1500 SERIES	SIDE ROOF		225B	250B	108	108RH
1974	WHITE	6000 SERIES TILT CAB	SIDE ROOF	0	225B	250B	108	108RH
1974	WHITE	FREIGHTLINER	0		225B	250B	108	108RH
1974	WHITE	FREIGHTLINER WITH ALUMINUM CAB	HIGH CORNER		225B	250B	108	108RH
1974	WHITE	ROAD XPEDITOR	SIDE ROOF	0	225B	250B	108	108RH
1973	WHITE	1500 SERIES	SIDE ROOF		225B	250B	108	108RH
1973	WHITE	6000 SERIES TILT CAB	SIDE ROOF	0	225B	250B	108	108RH
1973	WHITE	FREIGHTLINER	0		225B	250B	108	108RH
1973	WHITE	FREIGHTLINER WITH ALUMINUM CAB	HIGH CORNER		225B	250B	108	108RH
1972	WHITE	1500 SERIES	SIDE ROOF		225B	250B	108	108RH
1972	WHITE	6000 SERIES TILT CAB	SIDE ROOF	0	225B	250B	108	108RH
1972	WHITE	FREIGHTLINER	0		225B	250B	108	108RH
1972	WHITE	FREIGHTLINER WITH ALUMINUM CAB	HIGH CORNER		225B	250B	108	108RH
1972	WHITE	PDQ ALL MODELS	SIDE ROOF		225B	250B	108	108RH
1971	WHITE	1500 SERIES	SIDE ROOF		225B-U-I	250B-U-I	108	108RH
1971	WHITE	6000 SERIES TILT CAB	SIDE ROOF	0	225B-U-I	250B-U-I	108	108RH
1971	WHITE	FREIGHTLINER	0		225B-U-I	250B-U-I	108	108RH
1971	WHITE	FREIGHTLINER WITH ALUMINUM CAB	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1971	WHITE	PDQ ALL MODELS	SIDE ROOF		225B-U-I	250B-U-I	108	108RH
1970	WHITE	1500 SERIES	SIDE ROOF		225B-U-I	250B-U-I	108	108RH
1970	WHITE	FREIGHTLINER	0		225B-U-I	250B-U-I	108	108RH
1970	WHITE	FREIGHTLINER WITH ALUMINUM CAB	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1970	WHITE	PDQ ALL MODELS	SIDE ROOF		225B-U-I	250B-U-I	108	108RH
1969	WHITE	1500 SERIES	SIDE ROOF		225B-U-I	250B-U-I	108	108RH
1969	WHITE	FREIGHTLINER	0		225B-U-I	250B-U-I	108	108RH
1969	WHITE	FREIGHTLINER WITH ALUMINUM CAB	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1969	WHITE	PDQ ALL MODELS	SIDE ROOF		225B-U-I	250B-U-I	108	108RH
1968	WHITE	1500 SERIES	SIDE ROOF		225B-U-I	250B-U-I	108	108RH
1968	WHITE	FREIGHTLINER	0		225B-U-I	250B-U-I	108	108RH
1968	WHITE	FREIGHTLINER WITH ALUMINUM CAB	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1968	WHITE	PDQ ALL MODELS	SIDE ROOF		225B-U-I	250B-U-I	108	108RH
1968	WHITE	TREND	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1967	WHITE	1500 SERIES	SIDE ROOF		225B-U-I	250B-U-I	108	108RH
1967	WHITE	9000 TD	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1967	WHITE	FREIGHTLINER	0		225B-U-I	250B-U-I	108	108RH
1967	WHITE	FREIGHTLINER HALF CAB	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1967	WHITE	FREIGHTLINER WITH ALUMINUM CAB	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1967	WHITE	PDQ ALL MODELS	SIDE ROOF		225B-U-I	250B-U-I	108	108RH
1967	WHITE	TREND	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1967	WHITE	WC24-T	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1967	WHITE	D SLEEPER CAB	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1966	WHITE	1500 SERIES	SIDE ROOF		225B-U-I	250B-U-I	108	108RH
1966	WHITE	9000 TD	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1966	WHITE	FREIGHTLINER	0		225B-U-I	250B-U-I	108	108RH
1966	WHITE	FREIGHTLINER WITH ALUMINUM CAB	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1966	WHITE	PDQ ALL MODELS	SIDE ROOF		225B-U-I	250B-U-I	108	108RH
1966	WHITE	WC24-T	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1966	WHITE	D SLEEPER CAB	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1965	WHITE	1500 SERIES	SIDE ROOF		225B-U-I	250B-U-I	108	108RH
1965	WHITE	9000 TD	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1965	WHITE	FREIGHTLINER	0		225B-U-I	250B-U-I	108	108RH
1965	WHITE	FREIGHTLINER WITH ALUMINUM CAB	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1965	WHITE	PDQ ALL MODELS	SIDE ROOF		225B-U-I	250B-U-I	108	108RH
1965	WHITE	WC24-T	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1965	WHITE	D SLEEPER CAB	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1964	WHITE	1500 SERIES	SIDE ROOF		225B-U-I	250B-U-I	108	108RH
1964	WHITE	9000 TD	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1964	WHITE	FREIGHTLINER	0		225B-U-I	250B-U-I	108	108RH
1964	WHITE	FREIGHTLINER WITH ALUMINUM CAB	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1964	WHITE	PDQ ALL MODELS	SIDE ROOF		225B-U-I	250B-U-I	108	108RH
1964	WHITE	WC24-T	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1964	WHITE	D SLEEPER CAB	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1963	WHITE	1500 SERIES	SIDE ROOF		225B-U-I	250B-U-I	108	108RH
1963	WHITE	9000 TD	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1963	WHITE	FREIGHTLINER	0		225B-U-I	250B-U-I	108	108RH
1963	WHITE	FREIGHTLINER WITH ALUMINUM CAB	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1963	WHITE	PDQ ALL MODELS	SIDE ROOF		225B-U-I	250B-U-I	108	108RH
1963	WHITE	WC24-T	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1963	WHITE	D SLEEPER CAB	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1962	WHITE	1500 SERIES	SIDE ROOF		225B-U-I	250B-U-I	108	108RH
1962	WHITE	9000 TD	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1962	WHITE	FREIGHTLINER	0		225B-U-I	250B-U-I	108	108RH
1962	WHITE	FREIGHTLINER WITH ALUMINUM CAB	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1962	WHITE	PDQ ALL MODELS	SIDE ROOF		225B-U-I	250B-U-I	108	108RH
1962	WHITE	WC24-T	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1962	WHITE	D SLEEPER CAB	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1961	WHITE	1500 SERIES	SIDE ROOF		225B-U-I	250B-U-I	108	108RH
1961	WHITE	9000 TD	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1961	WHITE	FREIGHTLINER	0		225B-U-I	250B-U-I	108	108RH
1961	WHITE	FREIGHTLINER WITH ALUMINUM CAB	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1961	WHITE	PDQ ALL MODELS	SIDE ROOF		225B-U-I	250B-U-I	108	108RH
1961	WHITE	WC24-T	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1961	WHITE	D SLEEPER CAB	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1960	WHITE	9000 TD	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1960	WHITE	FREIGHTLINER	0		225B-U-I	250B-U-I	108	108RH
1960	WHITE	FREIGHTLINER WITH ALUMINUM CAB	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1960	WHITE	PDQ ALL MODELS	SIDE ROOF		225B-U-I	250B-U-I	108	108RH
1960	WHITE	WC24-T	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1960	WHITE	D SLEEPER CAB	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1959	WHITE	9000 TD	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1959	WHITE	FREIGHTLINER	0		225B-U-I	250B-U-I	108	108RH
1959	WHITE	FREIGHTLINER WITH ALUMINUM CAB	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1959	WHITE	WC24-T	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1959	WHITE	D SLEEPER CAB	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1958	WHITE	9000 TD	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1958	WHITE	FREIGHTLINER	0		225B-U-I	250B-U-I	108	108RH
1958	WHITE	FREIGHTLINER WITH ALUMINUM CAB	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1958	WHITE	WC24-T	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1958	WHITE	D SLEEPER CAB	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1957	WHITE	9000 TD	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1957	WHITE	FREIGHTLINER	0		225B-U-I	250B-U-I	108	108RH
1957	WHITE	FREIGHTLINER WITH ALUMINUM CAB	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1957	WHITE	WC24-T	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1957	WHITE	D SLEEPER CAB	HIGH CORNER		225B-U-I	250B-U-I	108	108RH
1989	WHITE GMC	XPEDITOR	SIDE ROOF	0	225B-H	250B-H-B	108	108RH
1988	WHITE GMC	XPEDITOR	SIDE ROOF	0	225B-H	250B-H-B	108	108RH
1987	WHITE GMC	XPEDITOR	SIDE ROOF	0	225B-H	250B-H-B	108	108RH
1986	WHITE GMC	XPEDITOR	SIDE ROOF	0	225B-H	250B-H-B	108	108RH
1985	WHITE GMC	ROAD XPEDITOR 2	SIDE ROOF	0	225B-H	250B-H-B	108	108RH
1985	WHITE GMC	XPEDITOR	SIDE ROOF	0	225B-H	250B-H-B	108	108RH
1984	WHITE GMC	ROAD XPEDITOR 2	SIDE ROOF	0	225B-H	250B-H-B	108	108RH
1984	WHITE GMC	XPEDITOR	SIDE ROOF	0	225B-H	250B-H-B	108	108RH
1983	WHITE GMC	ROAD XPEDITOR 2	SIDE ROOF	0	225B-H	250B-H-B	108	108RH
1983	WHITE GMC	XPEDITOR	SIDE ROOF	0	225B-H	250B-H-B	108	108RH
1982	WHITE GMC	ROAD XPEDITOR 2	SIDE ROOF	0	225B-H	250B-H-B	108	108RH
1982	WHITE GMC	XPEDITOR	SIDE ROOF	0	225B-H	250B-H-B	108	108RH
1981	WHITE GMC	ROAD XPEDITOR 2	SIDE ROOF	0	225B-H	250B-H-B	108	108RH
1980	WHITE GMC	ROAD XPEDITOR 2	SIDE ROOF	0	225B	250B	108	108RH
1979	WHITE GMC	ROAD XPEDITOR 2	SIDE ROOF	0	225B	250B	108	108RH
1978	WHITE GMC	ROAD XPEDITOR 2	SIDE ROOF	0	225B	250B	108	108RH
1977	WHITE GMC	ROAD XPEDITOR 2	SIDE ROOF	0	225B	250B	108	108RH

Perfect for installing your Unity spot light.  See my eBay Store for the NOS Unity spotlight interior mounting kit.  We charge actual shipping and will be glad to combine shipping on several auctions, or you would be welcome to pick them up at our shop.  Thanks!