Restoration Hardware ALESSA EXTENDED SHELTER BED Queen Bed: 66½W x 93½L Queen Headboard: 10D x 42H (20D at sides) Queen Headboard Widths: 122½ (wide), 132½(extra-wide) Side Rail Height: 11 Mattress Support Height: 9¾"
King Bed: 82½W x 93½L King Headboard: 10D x 42H (20D at sides) King Headboard Widths: 138½ (wide), 148½(extra-wide) Side Rail Height: 11 Mattress Support Height: 9¾"
Cal King Bed: 72½W x 97½L Cal King Headboard Widths: 134½(wide), 144½ (extra-wide) Cal King Headboard: 10D x 42H (20D at sides) Side Rail Height: 11 Mattress Support Height: 9¾"
https://www.rhmodern.com/catalog/product/product.jsp?productId=prod18940103