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Seal your doors with the Concealed Fastener Seal from National Guard. This durable seal stays flexible to -70°F and features a nylon brush insert for a tight seal. Made from aluminum with a gray finish, it's perfect for use with doors and meets ANSI/UL10C and CAN/ULC-S104 standards. The seal is easy to install with screws and can be used in a variety of applications, including commercial and residential settings. Its compact design and lightweight material make it ideal for use in tight spaces, providing a secure and reliable seal that withstands extreme temperatures.