| Return Shipping Will Be Paid By | Buyer |
| All Returns Accepted | Returns Accepted |
| Item Must Be Returned Within | 30 Days |
| Refund Will Be Given As | Money Back |
| Brand | Ruskin |
| Type | Manual Damper |
| Shape | Round |
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 damperwith factory mounted, locking hand quadrant designed especiallyfor manual balancing applications within round spiral ductwork. It iseasy to install and seal, becomes part of the ductwork and offersan economical alternative to a "shop built" damper STANDARD CONSTRUCTIONFRAME20 gage (.91) galvanized steel, 6" (152) wide.BLADES20 gage (.91) galvanized steel.CONTROL SHAFT/HAND QUADRANT 3/8" (10) square axle shaft extending beyond frame through factory mounted, locking hand quadrant.BEARINGSMolded synthetic.FINISHMill galvanized.MAXIMUM VELOCITY1500 fpm. (457 m/min.)MAXIMUM TEMPERATURE250˚F (121˚C).