Double Deck Stacking Kit w/ Caster Legs and Interconnecting Plumbing Item Number: KSK-C Stacking Kit w/ Casters & 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/ Casters. Interconnecting plumbing is included to ensure gas is properly distributed to your additional unit.