Thermwell WAT36H Clear Oak Exterior Threshold, 3-1/2 x 36 Scroll Box opening : 2" x

Box opening : 2" x 2"

Seals up duct work

Drain port provided for easy winterizing

Hot galvanized to resist rust and weathering

400 rpm/0-2

Thermwell WAT36H Clear Oak Exterior Threshold, 3-1/2 x 36 Scroll Box opening : 2" xFrost King provides three types of weather sealing products to keep your doors draft free, your home more comfortable and your energy bills under control. Door Thresholds not only help seal out drafts, dirt, moisture and insects, they can improve the appearance of your entryway. Remember, even a small gap under your door or around your door frame can let in as much frigid January air as an open window or a large hole punched through your wall.