The standard size of the Pantry Angle End will be determined by the the depth of the tall cabinets as set up in the Dimensions page ( the formula being carcass depth plus 20mm). As you can see in the below image the carcass depth has been set up as 580mm deep, making the overall depth 600mm including the panel. As this is a 45 degree angle the width will be the same as the depth.
In the order you will notice that Width 2 and Depth 2 have a value of 118mm, this is referring to the depth from the front of the gable to the back of the panel (see image above). These measurements are used to calculate the size of the door/doors. For more information on modifying this cabinet check out the Handy Hints and Extra Parts categories for this cabinet.