Restoration Hardware
ALESSA EXTENDED SHELTER BED
Queen Bed: 66½"W x 93½"L
Queen Headboard: 10"D x 42"H (20"D at sides)
Queen Headboard Widths: 122½" (wide), 132½" (extra-wide)
Side Rail Height: 11"
Mattress Support Height: 9¾"

King Bed: 82½"W x 93½"L
King Headboard: 10"D x 42"H (20"D at sides)
King Headboard Widths: 138½" (wide), 148½" (extra-wide)
Side Rail Height: 11"
Mattress Support Height: 9¾"

Cal King Bed: 72½"W x 97½"L
Cal King Headboard Widths: 134½" (wide), 144½" (extra-wide)
Cal King Headboard: 10"D x 42"H (20"D at sides)
Side Rail Height: 11"
Mattress Support Height: 9¾"

https://www.rhmodern.com/catalog/product/product.jsp?productId=prod18940103