This is a set of two Colonial style Anderson window grills, white in color and is easy to install and remove on Anderson windows with factory installed slots as shown in last photo.  Molded tabs on the end of each vertical and horizontal slips into the corresponding slot on your window to firmly hold the grill in place.  The grills are made of durable plastic that can be slightly bent for easy installation and removal of the grill.  Note that measurements of the grill width and height do NOT include the molded tabs.  See my other auctions for additional Anderson window grill sizes.  If interested in purchasing multiple grilles, contact me for discounted bundle pricing.  Free shipping to the continental US only.