10-71 thru 14-71 roots Kuhl supercharger base gasket. Gasket is .062" thick with a 14.250" x 4.250" opening that can be cut to fit many blower applications for roots or screw blowers. Works well for large opening roots blowers with full open bottom outlets.
Gasket is made in the USA so don't trust cheap knock off versions. Blower base gaskets have the specific five per side blower stud holes.