Products BaseRectangular Base Back Base Rail Fitting Rectangular 90° 556-21571-00 Item Number: 556-21571-00 Base Rail Fitting Rectangular , 4 Hole, 1" You May Also Be Interested In 60° Rectangular Base 956-09717-00 45° Rectangular Base 956-09719-00 PLUG IN REMOVABLE ANCHOR POLE LIGHT 956-50303-00 Heavy Duty Top Cap 956-09789-H0