what size is a standard pillow case
The classic bed pillow shape is usually a square or rectangle. In the US, they are common in these three sizes (in inches): Standard (20 x 26 inches), Queen (20 x 30 inches), and King (20 x 36 inches). In the US, a less common size is Jumbo (20 x 28 inches). The Jumbo size is larger than the Standard Size, and smaller than the Queen Size.