Crestron Gravity Cable Retractors (FT2A-CBLR-GR Series) offer a refined cable management solution for use with Crestron FT2 Series FlipTops. Each cable pulls out smoothly to any length up to 34 inches (86 cm) and stays out as long as it remains laying on the tabletop. Simply lifting the cable vertically above the FlipTop allows the cable to retract gently back into the FlipTop. Gravity cable retractors use a precision gravity-assisted track and pulley mechanism housed in a vertical enclosure beneath the table. Each Gravity Cable Retractor is composed of a retractor enclosure and pass-through module. The enclosure attaches to the FlipTop chassis beneath the table, while the module installs in the top of the FlipTop. A 4 foot long cable tail is provided below the table for connection to a DM transmitter or similar interface device. The pull-out end of the cable passes up through the module so that the connector nests neatly in place and pulls out easily for use. Each module is labeled with an international symbol icon indicating the connection type, which is backlit when installed in an "Electrical" FT2 FlipTop. When installed in a "Mechanical" FlipTop, the symbol icon remains legible but is not backlit. The pass-through module occupies two module spaces within the FlipTop. The retractor enclosure slides onto the side of the FlipTop chassis beneath the table and locks into place with a snap. Retractors normally install at the left and right ends of a module row, but can also be installed in the middle of a row by adding an FT2A-CBLR-BRKT series mid-row adapter bracket (one per row, each sold separately). Installation requires 28-7/16 inches (722 mm) minimum vertical clearance below the top surface of the table. End-mounted retractors require 2-3/8 inches (60 mm) horizontal clearance to either side of the chassis, while mid-row retractors require 2-3/4 inches (70 mm) horizontal clearance to the front or rear of the chassis. Several models of gravity cable retractors are offered. The following "4K" models feature a minimum TMDS bandwidth of 18 Gbps to support ultra high-definition digital video signals up to 4K60 4:4:4. Active circuitry is employed for optimal performance. Additional models are available to support analog AV and data signals. These cables retractors are passive. Should the cable within an FT2A-CBLR-GR series retractor ever become damaged, it can be replaced on site using a new FT2A-CBL-PT series cable. Note: See also the FT2A-CBLR-1T Series "One-Touch" Cable Retractors for applications with limited vertical space beneath the table.