Each unit is individually packed, they originally can in a huge box of 12.

You will get the item pictured.

The MDRS25 is a ruggedly built round manual balancing damper

with factory mounted, locking hand quadrant designed especially

for manual balancing applications within round spiral ductwork. It is

easy to install and seal, becomes part of the ductwork and offers

an economical alternative to a "shop built" damper

STANDARD CONSTRUCTION

FRAME

20 gage (.91) galvanized steel, 6" (152) wide.

BLADES

20 gage (.91) galvanized steel.

CONTROL SHAFT/HAND QUADRANT 3/8" (10) square axle shaft extending beyond frame through factory mounted, locking hand quadrant.

BEARINGS

Molded synthetic.

FINISH

Mill galvanized.

MAXIMUM VELOCITY

1500 fpm. (457 m/min.)

MAXIMUM TEMPERATURE

250˚F (121˚C).