KNOX 4 Bow Bimini Enclosure with Frame Kit
B40+U40A
Product details
Transform your open boat into a weather-ready retreat with KNOX's 4-Bow Bimini Enclosure Kit. Built with 900D solution-dyed marine fabric, clear TPU panels, and a heavy-duty stainless steel frame, this 4-side roll-up enclosure delivers full cockpit protection without sacrificing visibility or airflow. Roll up any panel, any time, your boat, your weather, your call.
| UV Protection | UPF 50+ |
| Waterproof | PU Coating |
| Color Fastness Rating | 5 |
| Warranty | 1 Year |
Sizing & Fit
Your bimini enclosure size is determined by three things: the number of bows on your bimini frame, the length of the bimini top, and your boat's beam width at the mounting point. Measure carefully before ordering — a snug fit ensures full weather protection.
- Bow Count: count the number of frame bows on your existing bimini top (3 or 4).
- Length: measure your bimini top from the front bow to the rear bow along the frame.
- Height: measure from the top of the gunwale (mounting point) straight up to the top of the bimini frame.
- Width: measure across your boat from gunwale to gunwale at the bimini mounting points. This is your beam width — select the range your measurement falls into.
- Designed to fit standard bimini tops with matching bow count and length
- If your beam width falls between two ranges, size up for easier installation
- Compatible with mesh and TPU window panel configurations
Size Chart
| Bow Count | Length (in / cm) | Height (in / cm) | Boat Beam Width (in / cm) |
|---|---|---|---|
| 3 BOW 6 FT LENGTH |
72" / 183 | 46" / 117 |
54"–60" / 137–152 61"–66" / 155–168 67"–72" / 170–183 73"–78" / 185–198 79"–84" / 201–213 85"–90" / 216–229 91"–96" / 231–244 |
| 4 BOW 8 FT LENGTH |
96" / 244 | 54" / 137 |
54"–60" / 137–152 61"–66" / 155–168 67"–72" / 170–183 73"–78" / 185–198 79"–84" / 201–213 85"–90" / 216–229 91"–96" / 231–244 |
Why Buy from KNOX.
Decide how much of your boat you want to be covered by the Bimini top. Ensure there is enough space on your boat to install the Bimini top without obstructing other equipment.
Happy Customers
Changing lives, on every adventure
Speedy Delivery
Order by 2 pm EST for same day shipping
30-Days Returns
Risk free outdoor adventure guaranteed
Roll up. Zip down. Your call.
Built to take the weather.
Marine-grade stainless steel
Brands Worked With
Frequently Asked Questions.
Didn't find the answer you're looking for?
What's the story behind the KNOX name?
Our brand name is inspired by Fort Knox-known historically as one of the world's most secure vaults. An iconic symbol that proudly proclaims fortress-like protection and unwavering dedication to safeguarding what matters most.
Can you ship to my location?
We currently ship to anywhere in the United States and Canada.
We offer shipping via UPS, FedEx, Domestic or Priority Mail. Our system ensures that your order is shipped through the most appropriate carrier. Tracking numbers are provided with the shipment.
Are online transactions secure and reliable?
Yes, knoxcovers.com is a secure site that uses SSL technology. This guarantees the confidentiality of your information and allows you to shop with peace of mind.
I have questions about my order. Who do I contact?
If you have any questions about your order, shipping status, changes, or issues, our support team is here to help.
You can reach us by emailing support@knoxcovers.com and including your order number in the message so we can assist you as quickly as possible.
How do I track my order?
Once your order ships, you’ll receive a shipping confirmation email with your tracking number and a link to track your package in real time.
Get in Touch.
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