Model A B C HB750-HRE* 4” 3⅛” HB750-HLE* 4” 3⅛” D * Not available online—must be Special Ordered at your local Home Depot ProDesk Model Home Depot Internet # A HB750-RE 303516958 3” 3⅛” HB750-LE 303516968 3” 3⅛” HB750-RE6 315156170 6” 3⅛” HB750-LE6 315156168 6” 3⅛” B Model Home Depot Internet # HB750-IC90 303516959 HB750-IC135 315156126 3 ⅞” Model Home Depot Internet # A HB750-OC 303516960 C A B B C HB750-OC135* * Not available online—must be Special Ordered