With 18″L x 1 3/4″W built-in lintel for new block brick or frame foundation construction. Durable polypropylene construction. 40 square inches net free area. 1/8″ aluminum screen. 8″ x 16″.
- Witten Automatic Vent Black Plast Slide Found Vent PMS-1BLACK
- WITTEN AUTOMATIC VENT