The white RCF FL-B HDL 6 W is a fly bar for various HL and HDL line-array modules an flyable-subwoofer modules. It holds up to 16 modules.

Compatibility
HL 6 Line Array Module
HDL 26-A Active Two-Way Line Array Module
HDL6-A Active Line Array Module
HDL 12-AS Active Flyable High-Power Subwoofer
HL 35-S Flyable Subwoofer
HDL 35-AS Active Flyable Subwoofer Module

Type Fly Bar
Weight 16.5 lb / 7.5 kg
Packaging Info
Package Weight 27 lb
Box Dimensions (LxWxH) 25.63 x 19.5 x 5.13"

RCF USA FB-HDL 6 W (RCF White HDL6 FLybar)