Hilti 4 hour thru wall penetration
Penetration Joint type: Head-of-Wall; Assembly rating:4 Hour; Concrete or block wall to concrete over fluted metal deck JW=3/4") (The Steel Network).
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Description:When installing the System, be sure not to exceed the listing limitations. Finally, a Class Three listing requires the material to be resistant to A very interesting calculation Packing Eliminated for 1 or 2 hr. C for both floor and wall penetrations F for floor penetrations only W for wall penetrations only The second letter of the designation identifies the construction type: