Thermwell Products Frost King TS36A Heavy-Guage Aluminum Sill Threshold, Mill Finish, 5-5/8\ x 3'
- Heavy gauge aluminum with construction Grade vinyl on the interior.
- Features a thermo-barrier design to prevent cold temperature transfers.
- Low rug, fixed sill design allows you to use on heights up to 3/4 in.
- Silver sill adds a beautiful look to your entry door.