Wise 8WD1174 Seat Stand is ideal for portable seating needs for boats, hunting blinds, camp site, backyard patio and tailgating Strong steel tube construction with rubber leg caps offers a very stable platform capable of over 350 lbs. 4 bolt pre-drilled 5-1/4" hole pattern - mount directly to seat or standard marine hardware Includes Wise 8WD17 Quick Disconnect Seat Mount adapter to mount a Wise 8WD10 6" boat seat swivel or equivalent brand Seat Stand Dimensions - Height: 13", Base Width: 19.25", Base Depth: 18.25"