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Ships within 48 hours · Estimated delivery Sep 3 - Sep 8
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Description
3 in. to 4 in. Roof Vent Kit for Round Duct Steel in BlackThe RVK1A Steel Roof Cap Kit is an easy to install vent for ventilation fans (bath, rec room, home gym, etc.). It is compatible with 3" or 4" ductwork and includes a 3" to 4" adapter for convenience. This cap features both a back draft damper and bird screen, preventing outside air from entering the home and birds and small pests from entering duct work. This kit includes all materials needed for installation, including 8 ft. of 4" flexible ducting,
The RVK1A Steel Roof Cap Kit is an easy-to-install vent for ventilation fans (bath, rec room, home gym, etc.). It is compatible with 3" or 4" ductwork and includes a 3" to 4" adapter for convenience. This cap features both a back draft damper and bird screen, preventing outside air from entering the home and birds and small pests from entering duct work. This kit includes all materials needed for installation, including 8 ft. of 4" flexible ducting, 4" metal duct connector, 4" to 3" Reducer, nylon zip ties and mounting screws. The flexible ducting conforms to UL 181 Class 1 Air Connector and CUL S110 requirements. Not suitable for dryer venting or flat roofs.- Built-in backdraft damper prevents outside air from entering home
- Built-in bird screen prevents birds and other small animals from entering duct work
- Kit includes all materials needed for install: 8 ft. of 4" flexible ducting, 4" metal duct connector, 4" to 3" Reducer, nylon zip ties and mounting screws
- Constructed of durable, resilient steel with a black powder coat finish
- Easy to install in new construction, replacement, or DIY applications
- Compatible with 3" and 4" round ducting
- Not suitable for dryer venting or flat roofs
- Shop all
- For any questions regarding product features, installation, or specifications, please call our Technical Services Dept. at 800-637-1453, Monday-Friday, 8:00 am – 7:00 pm EST.
Features
| Item Weight | 3 |
| Intake/Exhaust | Exhaust |
| Color/Finish | Black |
| Returnable | 180-Day |
| Screen Included | Yes |
| Material | Galvanized Steel |
| Shape | Rectangular |
| Color Family | Black |
| Paintable/Stainable | Yes |
| Power Type | Non-Powered |
| Mounting Position | Roof Mount |
| UV Resistant | Yes |
| Features | Built-in Screen,UV Resistant |
| Product Weight (lb.) | 2.3 lb |
| Product Depth (in.) | 11 in |
| Cut-Out Width (in.) | 5.25 |
| Product Width (in.) | 9.25 in |
| Product Height (in.) | 4.375 |
| Net-Free Area (Sq. In.) | 13 |
| Manufacturer Warranty | None |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 7 reviews
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Product Reviews
★★★★★ 5
Melatonin by Superior Source
Size: 100 Count (Pack of 1), Style: Melatonin 1mg
I've bought this melatonin repeatedly for years. It works gently and naturally to help me drift off to sleep and wake rested and ready for the day. I always get the smallest dose 1 mg
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 19, 2025
★★★★★ 4
So far it does help me with becoming drowsy for sleep
Size: 100 Count (Pack of 1), Style: Melatonin 1mg
So far this melatonin helps with making me drowsy, but I still take 1/2 a prescribed sleeping pill with it. Normally, within a half hour I am sleepy. I have not tried taking it by itself yet. I am a petite build, so I think my size factors in to how well it works for me. Flavor is okay. Easy to take melting it under my tongue. Price is okay. I like that it is sublingual and limited added ingredients. I don't usually take chamomile due to being sensitive to it in the past, but seems to be okay in this pill. It also seems to help me with staying asleep for a longer period of time.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 12, 2022
★★★★★ 5
Aids my sleep w/o grogginess the next day!!
Size: 100 Count (Pack of 1), Style: Melatonin 1mg
Superior Source has been a game changer in being part of my sleep aid supplements! My physician recommended this brand and dosage and I'm grateful!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
★★★★★ 5
Works well.
Size: 100 Count (Pack of 1), Style: Melatonin 1mg
Works well!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
★★★★★ 5
My favorite Melatonin supplement
Size: 100 Count (Pack of 1), Style: Melatonin 1mg
I have used this for a few months and really like it. I had previously used a spray that for some reason had added B6 (>2000% RDA) and I developed toxic levels of Vitamin B6 so had to switch. I love that this doesn't have any added garbage including no added flavors, artificial sweeteners or artificial dyes. The taste is fine. It's not candy and isn't supposed to taste like candy. It is just a bland taste that I hardly notice. Dissolves quickly and easily. Love it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 27, 2024