An isolation system for applications with curb-mounted equipment requiring a weatherproof seal.

The Amber-Booth Rooftop Isolation Rail incorporated a continuous extruded aluminum unit support rail, a stable 1' deflection spring, flexible reinforced neoprene weather seal, and a continuous extruded aluminum curb flashing. Each rail assembly is custom engineered for the equipment. Spring spacing (maximum 24 inches) is matched to equipment component weights and distributing frequencies, and properly sized neoprene isolated wind restraints are incorporated into spring mountings to resist wind velocities up to 60 miles per hour. The restraints are not "in play" during normal operation. Seismic restraints, 2" and 3" deflection springs, and 120 miles per hour wind restraints are available as an option.

RTIR systems are shipped in one piece up to commercial carrier limitations, (approximately 8' x 27') to eliminate possible leakage from field joints. Where field joints are required in oversized units, these are designed into the length members, never the corners, and splice kit assemblies are furnished by Amber-Booth. Corner joints are always shipped factory assembled with Amber-Booth's unique double flashing construction.

The reinforced neoprene weather seal is protected from accidental puncture and direct sunlight by a continuous aluminum weather shield. The weather shield is removable so that the flexible weather seal can be replaced, if necessary, without removing the support equipment.

The isolation heart of the system utilizes stable 1", 2", or 3" deflection springs, properly sized, undamaged, for efficient isolation.

The standard configuration of the RTIR assembly incorporated a 1 5/8' inch high hat section to mate with the rooftop unit mounting flange and a bottom flashing assembly for a nominal 2' wide roof curb. Adapters can be furnished to accommodate special unit mounting flanges and to match special curb configurations.