The National Guard Products (NGP) 672A concealed fastener sweep weatherstrip is an 84-inch strip designed for door gasketing and edge sealing systems, providing an effective barrier against air infiltration and smoke. It features an anodized aluminum alloy 6063, T5 temper housing with a polyamide synthetic gray nylon brush. A snap-on cover conceals the furnished #6 x 3/4" stainless steel sheet metal screws, which are installed through slotted holes for adjustment. The brush offers excellent abrasion resistance, flexibility, and memory, and is moisture resistant, also retaining insecticides well. It is not effective against water penetration. This weatherstrip operates efficiently within a temperature range of -70°F to 425°F. It is BHMA Certified to ANSI/BHMA A156.22 for heat and cold performance, UL Certified to CAN/ULC-S104, ANSI/UL10B, and ANSI/UL10C for fire doors (up to 3 Hr hollow metal, 90 min wood), and ANSI/UL1784 Category 'H' for smoke and draft control. The product is also REACH and RoHS compliant, and can be optionally equipped with Fast Attach Tape (FATT