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MAC Metal steel siding and vented soffit profiles
This is a listed siding assembly. Listing 8170-2358:0001. This site cites ASTM E84. Match the model and orientation.
MAC Metal's profile literature documents prepainted steel siding and soffit products. CAL FIRE OSFM listing 8170-2358:0001 covers the named siding and vented-soffit profiles roll formed from prepainted galvanized steel in 24- or 26-gauge configurations.
Two pages. A specification table and photographs; NO dimensioned section and no orthographic profile drawing anywhere in it. Publishes Height (covered) 6.0625 in (154 mm), Thickness (depth) 0.29 in (7.3 mm), standard length 144 in, gauge 26 or 24, ventilation 4.94 sq in per linear foot for the vented option, and Installation orientation horizontal | vertical | diagonal. Page 2 cites the W.U.I. accreditation as Inscription 8140-2358-0500, where this FA record carries OSFM listing 8170-2358:0001 — two different listings under one manufacturer code, unreconciled.
Same format and the same absence of a section drawing. Height (covered) 5.38 in (136.652 mm), Thickness (width) 0.44 in (11 mm), Installation orientation horizontal | vertical | diagonal.
One sheet serving THREE of this record's named profiles. Height (covered) 19.25 in (488.95 mm), Thickness (width) 1.0625 in (27 mm), Installation orientation VERTICAL only. Set against Harrywood Plus at 6.0625 in and Norwood at 5.38 in, the covered height across this record's twenty-four named profiles spans 5.38 to 19.25 in and the orientation spans vertical-only to any — which is why no single covered height, thickness or course rhythm can be read for this record. The blocker is the record's scope, not the sources: MAC Metal publishes a data sheet per profile and none of them carries a drawing.
Documented attributes
Each value below points to its field-level manufacturer, official-listing, test-report, or standard-body evidence.
Match the exact profile, 24- or 26-gauge configuration, vented or unvented construction, foam- backing restriction, finish, fasteners, substrate, and installation details to OSFM listing 8170-2358:0001 and current MAC Metal literature.
MAC Metal steel siding and vented soffit profiles. FireApproved. https://fireapproved.com/materials/mac-metal-architectural-inc-steel-siding-or-vented-soffit/. Last verified 2026-08-25.