These are the write-ups from their catalog
[with my comments noted]
Designed for simplicity and efficiency, the Pinto is still large enough - 6" deep and 14-3/8" opening -  to let you undertake a wide variety of glass projects. The Pinto's element is in the lid for even heating and faster firing, giving superior control for single layers. A 115V infinite switch allows precise control for consistent, high quality creative results. Use the Pinto anywhere you have a standard 115V, 20 amp outlet.  This handy little unit comes standard with infinite switch control, pyrometer and stand. Optional shelves are available.
 From the flat of one side to the point of the opposite side is actually 15-1/4". Probably the 14-3/8" they mention is the size of the circle that would touch all seven sides.
 This kiln actually only draws 14.7 amps, so *could* be used on a 15 amp circuit as long as there's nothing else running on that circuit. Rated at 1690 watts.
Versatility is the key word for our larger, side fired glass kiln. The Octagon fuser operates on any 240 V, 20 Amp circuit.[*] Its Dawson Kiln Sitter povides automatic shut-off in all types of production. Side elements and 9" of depth allow you to use two shelves for 400 square inches of usable area. Slump larger pieces on a single shelf using the full 17-1/2" opening and 9" depth. The Octagon Fuser's infinite switch permits precise temperature control. The top-loading, multi-side design eliminates hot or cold spots, so you can use the entire firing chamber. Comes standard with infinite switch and stand. Kiln shelves and pyrometer are available.
[*] The Fuser actually draws 15 amps and is rated at 3600 watts.
For more info,
Skutt Ceramic Products, Inc.
2618 S.E. Steele Street
Portland, Oregon 97202