Glacier Bay'S Two-Piece Dual Flush Sink Requires Two Sinks. Sink Twice was made as a general fit for most toilets. It is not an exact fit for the Glacier Bay dual flush, although it is a decent fit. The hole is "rough cut" for the Glacier Bay Dual Flush button to prevent it from slipping, but is nicely covered by the button itself. The bottom rear on the right and left sides are sanded down to allow for it to seat correctly with the slight trapezoidal shape of Glacier Bay's Dual Flush. The button is to be removed from the current toilet lid and reinstalled on Sink Twice, with a little adjusting of the hight of the prongs that trigger the flushing mechanism. Sink Twice is made of extremely durable ABS plastic. Please also note that this Sink Twice is not for the Glacier Bay one piece toilets. Shipping: Shipping is complimentary within the lower 48 US States. We Do Not Ship to PO/APO Boxes, HI or Alaska We Do Not Ship Outside of the Continental US All items ship within 24-72 hours of Payment For large items that require Freight shipping a valid phone number is required to call and schedule your delivery Terms of Sale and Feedback: Feedback is extremely important to us and If you are satisfied with our transaction, please take a moment to leave Positive Feedback. YOUR Satisfaction is our #1 Priority! If there are any issues, PLEASE contact us BEFORE leaving a neutral or negative rating so that we may resolve any concerns. We PROMISE we can make you happy if you give us a fair chance. Returns / Concerns: All items qualify for returns within 14 - 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged Please be sure this is an item you want before making your purchase. Customer Satisfaction is our TOP priority! All items are IN STOCK at time of listing. Inventory changes constantly and it is impossible to maintain a perfectly accurate count of all items. Please do not penalize us if we have to issue you a refund! Thank You For Your Business!