The rooftop unit can be mounted immediately after the curb is installed and roofing can be completed at a later date without disturbing the unit. This reduces the additional crane or helicopter expenses.

New, flexible 8" counter flashing provides a weather seal and easy access to the spring isolators for adjustment or replacement. This eliminates having to roof around spring access ports. The isolators are custom sized and spaced to accommodate the roof-top's weight and center of gravity for a minimum 90% isolation efficiency.

Vibro-CurbŪ II features a 2" x 2" wood nailer for attaching roofing felts. Standard height is 21" with options for different heights and the Vibro-CurbŪ II can be fabricated to match specific roof pitch. The unit may be factory assembled and shipped in one piece... or shipped in a limited number of sub-assemblies.

SPECIFICATIONS

• The designated contractor shall supply and install a "Vibro-CurbŪ II", factory-fabricated combination roof mounting curb and vibration eliminator base as manufactured by ThyBar Corporation.
• Base shall be designed so that it can be re-roofed without disturbing the rooftop unit.
• The vibration eliminating portion of the assembly shall be constructed of structural steel and designed to match perfectly the bottom of the rooftop unit.
• The vibration eliminators shall be so designed to provide a minimum of 90% isolation efficiency with 1", 2" and 3" deflection.
• The roof curb shall be supplied complete with wood nailing strip and continuous 8" rubber counter flashing making the "Vibro-CurbŪ II" unit water tight.