NFPA 70E arc-rated FR clothing, how do you categorise and filter?

NFPA 70E governs electrical safety in workplaces; the FR-clothing layer is rated by ATPV (Arc Thermal Performance Value) or EBT (Energy Breakopen Threshold) in cal/cm². NFPA 70E table 130.7(C)(15)(c) maps task-based hazard categories to minimum PPE category (PPE Cat 1 = 4 cal/cm², Cat 2 = 8, Cat 3 = 25, Cat 4 = 40+).

Magento attribute schema:

• atpv_rating, numeric (the literal cal/cm² value), filterable.
• ppe_category, multi-select (1 / 2 / 3 / 4 / 4+).
• nfpa_2112_compliant, boolean (FR fabric for industrial flash-fire; oil + gas).
• nfpa_2113_compliant, boolean (proper care + use; sold with garment).
• astm_f1506, boolean (arc + flame fabric standard; mandatory for arc-rated).

Buyers shop by PPE Cat first (“I need Cat 2 for this task”), not by brand. Layered navigation must lead with PPE category + ATPV range, then brand, then size. Bulwark, National Safety Apparel, Lakeland Fire, Tyndale, Carhartt FR are the brands worth carrying. PDP must show the certification logos (NFPA 70E + NFPA 2112 + ASTM F1506) above the buy box.

Bundle pattern: arc-rated kit = coverall + FR shirt + dielectric Class 0 glove + arc-rated face shield + arc-rated hood. Sold to refinery + utility + electrical-contractor accounts. AOV $400, $1,200 per kit.