Precision Series Box Rib

Box Rib is a set of four box-shaped rib wall profiles, numbered Box Rib 1 through Box Rib 4, within the PAC-CLAD Precision Series from Petersen. The set is part of the concealed-fastener metal wall panel family and sits beside the HWP and Highline profiles in the same series.

Box Rib panels are 1-3/8 inches deep and 12 inches wide, nominal. Unlike HWP and Highline, no 16 inch width is listed. The rib angles are 87 degrees, and the four profiles differ in how the ribs are spaced across the panel. Installation is horizontal or vertical, in single-piece runs.

Steel is 24 gauge or 22 gauge. Aluminum is .032 or .040 inch, and .050 inch for the clip version only. Galvalume Plus is available.

Box Rib comes with a no-clip fastener flange or with a clip. The clip form lets the panel expand and contract with temperature. The clip version is used for panels over 20 feet, and the screw-leg version is acceptable under 20 feet.

Minimum length is 4 feet, and Annapolis Junction, Maryland production has a 60 inch minimum. Maximum length is 30 feet for steel and 22 feet for aluminum on the through-fastened leg, with longer lengths available on clip panels. Wall elevations with panels longer than 36 feet need flashing breaks. Box Rib panels are not designed to be field-lapped over one another.

Perforated panels are made in aluminum only and are listed for equipment screens, for use over graphics and for architectural accents.

• ASTM E330 test report for Box Rib 1.
• ASTM E1592 for 1 by .032 aluminum with clip and 1 by 24 gauge steel with clip.
• ASTM E283 and E331 for the Box Rib series.
• ICC-ES ESR-5839.
• Florida approval listing for wall panels.

E330 load tables cover .032 aluminum with clip, .032 aluminum with screw leg, and 24 gauge steel with clip.

Box Rib profiles connect with the other Precision Series profiles, so a wall can mix Box Rib with HWP and Highline ribs in one pattern. Z-girt detail drawings are published in horizontal and vertical sets of 14 details each, in PDF and CAD versions.

• Corners: inside, outside, and outside mitered (horizontal).
• Jamb, sill, window head, window jamb and window sill.
• Splice, in isometric and plan views for horizontal runs.
• Top-of-wall, top-of-wall tie-in and wall-to-soffit.
• Installation, clip detail and fastener flange detail graphics.

PAC-CLAD colors use Kynar-based 70% PVDF coatings. Color categories are standard, metallic and cool, and Ore and wood grain finishes are listed separately. A finish warranty is available.

BIM files cover the PAC-CLAD material palette and the Box Rib 1 wall panel. A project reference for the series is the UT Energy and Environmental Science Research Building in Knoxville, Tennessee.