Manufacturer's Description:
35 Degree Adjustable Outside Width/Length: 4-3/4"
Compatible Housings: NSLIC-401AT/10, NSL-401AT/10, NSLR-404AT/10, NLIC-401 Series,NL-401 Series, NLR-404 Series, NL-402S Series, NLR-403S Series, NLR-405AT Series
Lamp: 50W 120V MR16 GU10; 75W 12V MR16; 50W 12V MR16 (IC/Shallow).