4 11/16" Square Welded Boxes & Extensions
Image	Part No.	Size	Inner	Master
	B7451-25		N/A	20
	B7452-25		N/A	20
	B8451-20		N/A	20
	B8453-25		N/A	20
	B8454-25		N/A	20
	B8456-25		N/A	20
	B8544-25		N/A	50
	B8545-25		N/A	50
	B8548-25		N/A	50
	B8549-25		N/A	50
Specifications