Dayus OBD Opposed Blade Dampers

· Opposed blade damper with slide operator
· Extruded aluminum frame with rollformed aluminum blades
· Pressure fit nylon pivot pins (rattle free & non loosening)
· Easily operated with a flat screwdriver
· Available on 2” increments as standard
· Custom sizes available but extra charge may apply
· Only available in Mill

Any available size in 3 days! Call us at 877-711-4822 if you do not see the size you need listed.

Configure
Specs/Pictures
Links
Shipping
Q&A

Type/Style:
(click on picture for a larger view or spec) Click here to download the grille cut-sheet (info sheet).
LIST* Width:
LIST* Height:	Please select WIDTH above first *NOTE: The LIST width and height are the size of the OPENING.
Finish:	Dayus Color Chart
Production:	Standard Production (Up to 4 Weeks - Least Expensive) Friday Next Production (Not this Friday, but next Friday. Order must be placed before 1 pm PST Thursday) 3-Day Express Production (Most Expensive).

Model Number: OBD
Total Price (each): $ $0.00 Note: Dayus products are made-to-order. They are NON-RETURNABLE and the order cannot be cancelled once in production. The minimum order amount is $45 (will be reflected in the basket).	Quantity:

OBD Damper Cut Sheet (PDF file)

Do you have questions about the products on this page?

Click on the ? image on the left or this link to ask us your questions!

#1	Q: How much leakage do these have when closed? A: Dayus does not publish leakage specs. They seal well but there are no silicon edge seals so there will likely be some leakage at higher pressures. Asked on 2020-08-23 by WPI
#2	Q: Reference Q3, could an owner- devised supplementary lever system be used to manually actuate the installed operator arms? A: Not likely. There is no easy way to access the arms outside the system provided with the dampers. Asked on 2020-08-23 by WPI
#3	Q: Could the damper be modified by me for modulation by an electric actuator? A: Typically no. There are no shafts that extend out the sides where an actuator could be mounted. Asked on 2016-09-08 by Rory
#4	Q: Is it possible to have one of these where they open when air pressure is applied ? like when a generator starts up ? A: Not this particular unit, but we do have some gravity dampers that would blow open and close via gravity when the fan shuts off. Asked on 2014-05-18 by Earnest
#5	Q: The description says these are manually actuated. Is there a lever arm or somesuch? A: There is a lever that one would access with a screwdriver through the face. Asked on 2013-06-25 by Isaac

why buy from us?

We're engineers passionate about home ventilation and serious about customer service – so you can count on us for carefully-selected equipment and expert advice to ensure your project is a success from specification to installation.

Your call is answered by qualified people who will gladly discuss your project in detail, advise you professionally and never sell you inappropriate products.