*PLUMBERSSTOCK EXPERT* responded:
Good day! We appreciate your interest in our Jensen 840M18CH Cabinet. The 16 x 22 is for the cabinet's opening outside the wall. The recessed opening should be 15-1/2" x 17-1/2". Here is the specification sheet where you can view the detailed illustration with the dimensions and measurements for a successful installation. If you wish to purchase this product, just click Add To Cart and you're all set. Should you have further questions, please let us know. We are not here to just make a sale. We want you to be happy and confident with your purchases from our site. Thank you for shopping with plumbersstock.com - the perfect site to find high-quality products at low, low prices!