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If you are remodeling and want to meet Building and Fire Code requirements, this ULC labelled and listed door kit upgrades hollow, panelled, semi-solid and solid wood doors to a 20 minute fire protection rating. Quick and easy installation on one side of the door only, it takes just 45 minutes to install. Ideal for unique and historic buildings, the design increases resistance to forced entry and is created from environmentally friendly products (fire retardant does not contain asbestos). As well, it increases insulating value of the existing doors, helps to eliminate drafts and noises, and reduces transmission of sound through the door by 17 decibels. Screws are supplied in the kit.