No! The plural of [ foot ] is [ feet ] (not feets) and when sizes/capacities are used adjectivally the singular is typically used. There are some exceptions, but I cannot think of any that would apply in this context.
Not with the foot measurement, since the plural is feet. If you want to use something that ends in "s", you need to use a different unit of measurement that does have a plural ending in "s"—inch (inches), yard (yards), meter/metre (meters/metres) . . .