4.5x4.5 base to replace 4x4 white Imperial base for Item # SL211W

4.5" x 4.5" base will easily replace the existing 4x4 base of item # SL211W (simply remove the 4 screws located on the inside of the lens of the 4x4 base and replace with the 4.5" x 4.5" base) 

TRA45W