This Bundle contains 2 items (Outside Mount Door Flood Barrier Shield (10'' x 48'') + Door Flood Barrier Threshold in 48'' Residential and Commercial Door Flood Panel. Extremely easy installation - Mount Channels to the door frame, slide Flood Barrier down and secure by tightening screws. The flood guard is 10 inches in height, 48 inches in length, and has a 1/4 inch width. It is made of 5052 type marine grade aluminum. The Door Food Barrier Threshold is applied to doorways to insulate the gap between door and floor or to create a transition between two-floor surfaces. This Door Flood Barrier Threshold has a 1/4 inch height and is 3 inches wide. The Length of this Threshold varies. This 48'' Door Flood Barrier Threshold is used with the Outside Mount Door Flood Barrier Shield which is 48 inches in length.