new

<p>Gas cabinets shall be constructed in accordance with Section 5003.8.6 and shall comply with the following:</p>
<ol><li>Exhausted to the exterior through dedicated exhaust duct sysem installed in accordance with Chapter 5 of the International Mechanical Code.</li>
<li>Supply and Exhaust shall be ducts shall be enclosed in a one-hour rated shaft enclosure from the cabinet to the exterior. The average velocity of ventilation at the face of access ports or windows shall be not less than 200 feet per minute (1.02 m/s) with not less than 150 feet per minute (0.76 m/s) at any point of the access port or window.</li>
<li>Provided with an automatic sprinkler system internal to the cabinet.</li>
</ol>

old

<p>Gas cabinets shall be constructed in accordance with Section 5003.8.6 and shall comply with the following:</p>
<ol><li>Constructed of not less than 0.097 inch (2.5mm) No. 12ga steel.</li>
<li>Provided with self-closing limited access ports or noncombustible windows to give access to equipment controls.</li>
<li>Exhausted to the exterior through dedicated exhaust duct sysem installed in accordance with Chapter 5 of the International Mechanical Code.</li>
<li>Supply and Exhaust shall be ducts shall be enclosed in a one-hour rated shaft enclosure from the cabinet to the exterior. The average velocity of ventilation at the face of access ports or windows shall be not less than 200 feet per minute (1.02 m/s) with not less than 150 feet per minute (0.76 m/s) at any point of the access port or window.</li>
<li>Provided with an automatic sprinkler system internal to the cabinet.</li>
</ol>