Very good value for the same price with the shipping cost. the circumference of the lid is slightly smaller than the toilet but it is absolutely not interfere when one sits. Easy installation and trouble for standard toilet. The fastening system is plastic, it may be that it is a shorter lifespan than the models shown with stainless steel fasteners. To see in time. I recommend this product. Delivery on time, pay attention to the still very average package that arrived opened. The product was protected bubble but even the packaging is a bit light