SD-05-00 ITRODUCTION TO HVAC DUCT WORK PART 1OF2 – BY: Mohamed Abd El-Fattah SD-05-00 ITRODUCTION TO HVAC DUCT WORK PART 2OF2 – BY: Mohamed Abd El-Fattah SD-05-01 HVAC System Fittings and Supports SD-05-02 HVAC System Shop drawing