Specially structured or shaped covering, lining or flooring elements not otherwise provided for comprising two layers fixedly secured to one another, in offset relationship in order to form a rebate in offset relationship longitudinally as well as transversely
Specially structured or shaped covering, lining or flooring elements not otherwise provided for comprising two layers fixedly secured to one another, in offset relationship in order to form a rebate in offset relationship longitudinally as well as transversely