Buoyancy:620lbs

· Heavy wall thickness (.150) nominal wall
· One piece rotational molded shell
· Completely foam filled 1.0-1.5 density EPS
· Virgin grade polyethylene materials
· UV inhibitors
· Molded in Mounting slots
· Heavy Duty mounting flange
· Meets Corps of Engineers Regulation #36 CFR Part 327
· 15 year warranty
· Tank tested buoyancy ratings +0/-5%