Set screws allow for adjustment to seal uneven gaps between bottom of door and floor for a weathertight seal. "Thermal-Break" design prevents frost build-up on interior surface of threshold. 1-3/8" to 1-5/8" Height.

WARNING: This product is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.