| Open with Fan Pressure; Gravity Closes when Fan Turned Off |
| For 24 in wall fans |
| Open with fan pressure, gravity closes when fan turned off |
| 1 in W.G. maximum differential pressure, 200 deg F without electric motor, 130 deg F with electric motor |
| Self lubricating heavy duty nylon bearings |
| Felt seals between adjacent blades |
| Screw mounting, polyurethane sponge seals on ledge and felt between adjacent blades |
| 26 in square x 6 in D size |
| Number of Holes 17/64 in diameter 12 |
| 26 in square inside, 29 in square outside |
| MK-5047 motor number |
