The Super Jumbo is commonly referred to as an SJ. 
It's a Big Daddy at 17' (43 cm).
This is the largest of my models and the ultimate strummer. It provides a full rich tonal spectrum with particular emphasis on the bass response. 

Dimensions
Upper Bout: 12 1/16" (307mm)
Waist: 10" (254mm)
Lower Bout: 16 13/16"(425mm)
Body Depth: 4.5" (115mm)
Overall Length: 42.5" (108cm*)