A two-hour fire-rated partition assembly features a control joint with a maximum width of one-half inch and a maximum internal gap of one-quarter inch. The partition layout requires a maximum spacing of twenty-four feet between control joints. The fire-rated construction conforms to Underwriters Laboratories system number WW-D-0172.
MAX 1/2" 2 HR FIRE RATED UL SYSTEM NO. WW-D-0172 24'-0" MAX 24'-0" MAX PARTITION CONTROL JOINT MAX 1/4"
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