Had to replace an electric insert purchased from another company a dozen years ago.  Prices since then have skyrocketed, so it was cost prohibitive to try to replace the old unit with one exactly the same.  Found the Ayame on Wayfair, for a reasonable Black Friday price, so we ordered it.  In just a couple days it was delivered, and it is everything we wanted and needed.  One caveat -  it was unclear based on the product description on the website whether the purchase included a brushed stainless steel frame, but we didn't need one, and we didn't see a way to add a frame, or not order one, when we place our order for the insert, so we just went ahead and placed the order.  No frame.  If you are looking for one, we aren't sure how you would go about getting the right one.  In any event, if you don't need one, no problem!