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C.R. Laurence has your next project covered with a door threshold for top-hung sliders, bifold doors, or outswing doors. Shop our large selection of exterior door threshold options, from our residential door threshold to panic threshold options to ensure ADA compliance. CRL door sill options have you covered if you are looking for an adjustable door sill or sill extender. Our wide array of saddle threshold options includes the standard aluminum threshold for door, along with door threshold ramp and half saddle threshold options to meet any project's needs.