The M-D Aluminum Sill-type Standard Threshold protects against drafts, moisture, dust and insects. This threshold can be used with a new door or to replace an existing threshold. All of the hardware needed for installation is included. Before installation, the threshold can be cut to a desired length using a hacksaw. To best seal your doorway, this product can be used with a door sweep or an under door seal. From the Manufacturer Contractor grade threshold with 1-1/8-Inch fixed vinyl riser. Heavy duty aluminum and rigid vinyl design assures years of protection from the elements. Installing a threshold will help seal out drafts from the bottom of your door. A door sweep or door bottom is recommended to be used with this threshold to provide the best weather tight seal.