Double Deck Stacking Kit w/ 6" Legs and Interconnecting Plumbing Item Number: KSK-L Stacking Kit w/ 6" Legs & Interconnecting Plumbing, for Double Deck Unit Request Quote More Information Overview Double up on your Kintera Convection Oven with the Double Deck Stacking Kit w/ 6" Legs. Interconnecting plumbing is included to ensure gas is properly distributed to your additional unit.