The RCF SB-TTL33 Stack Bar Kit is a structural accessory designed to enable ground stacking of TTL33-A line array modules when used with the Fly Bar TTL33. Constructed from high-strength steel and finished with black, scratch-resistant paint, the kit ensures durability and visual consistency in professional audio setups. It allows the TTL33 system to be configured for either flown or stacked deployment, depending on venue requirements. The kit includes quick-lock pin compatibility for secure assembly and is TT+ approved for integration with RCF’s touring-grade systems. With a compact form factor and a weight of approximately 4.28 lb, it’s engineered for ease of transport and installation in live sound, touring, and fixed installation environments.