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- Damper Application: Backdraft
- For Nominal Duct Diameter: 64 in
- Frame Material: Galvanized Steel
- Number of Panels: 2
- Maximum Air Velocity: 2000 fpm
- Overall Height: 63 3/4 in
Specifications
| Part Number | 5NKN9 |
| Brand | DAYTON |
| Item | 63.75 In.H-W 4.5 In.L Aluminum Backdraft Dampr |
| Damper Application | Backdraft |
| For Nominal Duct Diameter | 64 in |
| Frame Material | Galvanized Steel |
| Number of Panels | 2 |
| Maximum Air Velocity | 2000 fpm |
| Overall Height | 63 3/4 in |
| Rough Opening Diameter | 64 in |
| Rough Opening Shape | Square |
| Fits Fan Diameter | 60 in |
| For Duct Shape | Square |
| Free Area | 29.5 sq ft |
| Overall Width | 63 3/4 in |
| Frame Material Thickness | 20 ga |
| Overall Length | 4 1/2 in |
| Frame Depth | 2 in |
| Rough Opening Length | 64 in |
| UPC | 190735347768 |
Description
DAYTON 5NKN9 is a horizontal backdraft damper for square ducts with a nominal duct diameter of 64 in. It has a galvanized steel frame with a thickness of 20 ga, two panels, and a free area of 29.5 sq ft. The damper measures 63 3/4 in high by 63 3/4 in wide by 4 1/2 in long, with a maximum air velocity of 2000 fpm.
Confirm the part number against your existing unit or equipment before ordering to ensure correct fit.
Shipping and dispatch
Shipping method and available services depend on the item and delivery address. Check the product shipping information and checkout for shipping options and charges.
Dispatch times vary by product and supplier. Any supplier dispatch estimate shown is subject to availability. Transit time begins after shipment and is additional to dispatch time.
Freight shipments
Products identified as freight ship by truck. Review the available delivery service and charges at checkout; delivery arrangements depend on the selected service.
Inspection and Damage:
Upon delivery, please inspect the carton and contents for any damage. If you find any damage, document it on the driver's delivery receipt and contact us immediately at support@proreplacementparts.com no later than 24 hours from the delivery time. We cannot accept responsibility for damage that is not noted on the driver's delivery receipt at the time of delivery.
Order Cancellations:
All order cancellations must be requested within 24 hours of placing the order. After this period, our standard return policy will take effect.
Thank you for choosing Pro Replacement Parts. We are dedicated to providing you with the best service and ensuring your orders are delivered in a timely and efficient manner. If you have any questions or need further assistance, please don't hesitate to contact us.
Exact part numbers. Every listing starts with the manufacturer part number, so you can match it to the part in your equipment before you order. Not sure it fits? Ask us first.
Clear shipping. Check the product shipping information for the shipping method and any supplier dispatch estimate. Shipping options and charges are shown at checkout.
Real people. Call 617-286-6694 (Monday to Friday, 9 AM to 6 PM ET) or email support@proreplacementparts.com with a part number or model number.
Returns. Unopened parts can be returned within 30 days. Electrical and gas parts are final sale once opened. Details are on our Returns & Refunds page.
Your purchase is covered by the Manufacturer’s Limited Warranty.
For return/refund information, please visit our Returns & Refunds page.
Description
- Damper Application: Backdraft
- For Nominal Duct Diameter: 64 in
- Frame Material: Galvanized Steel
- Number of Panels: 2
- Maximum Air Velocity: 2000 fpm
- Overall Height: 63 3/4 in
Specifications
| Part Number | 5NKN9 |
| Brand | DAYTON |
| Item | 63.75 In.H-W 4.5 In.L Aluminum Backdraft Dampr |
| Damper Application | Backdraft |
| For Nominal Duct Diameter | 64 in |
| Frame Material | Galvanized Steel |
| Number of Panels | 2 |
| Maximum Air Velocity | 2000 fpm |
| Overall Height | 63 3/4 in |
| Rough Opening Diameter | 64 in |
| Rough Opening Shape | Square |
| Fits Fan Diameter | 60 in |
| For Duct Shape | Square |
| Free Area | 29.5 sq ft |
| Overall Width | 63 3/4 in |
| Frame Material Thickness | 20 ga |
| Overall Length | 4 1/2 in |
| Frame Depth | 2 in |
| Rough Opening Length | 64 in |
| UPC | 190735347768 |
Description
DAYTON 5NKN9 is a horizontal backdraft damper for square ducts with a nominal duct diameter of 64 in. It has a galvanized steel frame with a thickness of 20 ga, two panels, and a free area of 29.5 sq ft. The damper measures 63 3/4 in high by 63 3/4 in wide by 4 1/2 in long, with a maximum air velocity of 2000 fpm.
Confirm the part number against your existing unit or equipment before ordering to ensure correct fit.
Shipping
Shipping and dispatch
Shipping method and available services depend on the item and delivery address. Check the product shipping information and checkout for shipping options and charges.
Dispatch times vary by product and supplier. Any supplier dispatch estimate shown is subject to availability. Transit time begins after shipment and is additional to dispatch time.
Freight shipments
Products identified as freight ship by truck. Review the available delivery service and charges at checkout; delivery arrangements depend on the selected service.
Inspection and Damage:
Upon delivery, please inspect the carton and contents for any damage. If you find any damage, document it on the driver's delivery receipt and contact us immediately at support@proreplacementparts.com no later than 24 hours from the delivery time. We cannot accept responsibility for damage that is not noted on the driver's delivery receipt at the time of delivery.
Order Cancellations:
All order cancellations must be requested within 24 hours of placing the order. After this period, our standard return policy will take effect.
Thank you for choosing Pro Replacement Parts. We are dedicated to providing you with the best service and ensuring your orders are delivered in a timely and efficient manner. If you have any questions or need further assistance, please don't hesitate to contact us.
Why Buy From Us?
Exact part numbers. Every listing starts with the manufacturer part number, so you can match it to the part in your equipment before you order. Not sure it fits? Ask us first.
Clear shipping. Check the product shipping information for the shipping method and any supplier dispatch estimate. Shipping options and charges are shown at checkout.
Real people. Call 617-286-6694 (Monday to Friday, 9 AM to 6 PM ET) or email support@proreplacementparts.com with a part number or model number.
Returns. Unopened parts can be returned within 30 days. Electrical and gas parts are final sale once opened. Details are on our Returns & Refunds page.
Warranty/Returns
Your purchase is covered by the Manufacturer’s Limited Warranty.
For return/refund information, please visit our Returns & Refunds page.
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