This plastic replacement fin box has an 8.5 inch US standard compatible box for an inflatable stand-up paddle board and is a total length of 13inches. It also includes a Black PVC base cover to seal the base.

⚠️WARNING: This product can expose you to Di(2 - ethylhexyl)phthalate(DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm.