Pro-Line 21 Specifications
- Length Overall (LOA): 21'11"
- Beam: 8'6"
- Dry Weight: ~2,187 lbs
- Engine: Single outboard, 200 HP max
- Fuel Capacity: 70 gallons
- Draft: ~15"
- Hull Type: 19° deadrise fiberglass, wood-free composite
Cover Features
- Fabric Options: 9oz solution-dyed marine fabric or premium Sunbrella acrylic
- Coverage Type: T-Top cover wraps hull below hardtop; hardtop remains exposed
- Construction: Reinforced stitching, hem cord at rubrail, adjustable tie-down straps
- Durability: Solution-dyed fabric (5-7 years); Sunbrella acrylic (8-10 years)
- Fit: Custom-fitted to 21'11" Pro-Line 21 specifications
- Protection: UV-resistant, water-repellent, weatherproof
Additional information
Choose Your Cover Fabric
7 oz. Polyester — Our entry-level marine cover fabric, woven from 100% polyester fiber at a 7 oz. per linear yard weight. This lighter option keeps the cover manageable for solo handling while still delivering reliable protection against sun, rain, and debris. Backed by a 3-year fabric warranty. Ships in Black.
9 oz. Polyester — Step up to our heavy-duty polyester, engineered at 9 oz. per linear yard for boats that face tougher conditions or extended outdoor storage. The denser weave adds an extra layer of defense against abrasion and weather without adding unnecessary bulk. Protected by a 5-year fabric warranty. Ships in Navy or Black.
Sunbrella® — For boaters who want the best, our Sunbrella covers use 100% solution-dyed acrylic — the same fabric trusted by marine professionals worldwide. Naturally resistant to fading, mold, and water damage, Sunbrella holds its color and integrity season after season. Covered by a 6-year fabric warranty. Ships in Black, Smoke, or Marine Blue.
Both polyester options feature solution-dyed construction, where pigment is infused into each fiber during production rather than applied to the surface afterward. This process locks color deep into the material, preventing any dye transfer to your boat’s gel coat or finish. The result is a cover that stays vibrant without bleeding or rubbing off. Our polyester is also designed to breathe — it allows moisture trapped underneath to vent out naturally, reducing the risk of mildew and keeping your boat dry. The fabric holds its form without sagging or stretching over time, stays lightweight enough for one person to handle, and stands up to prolonged UV exposure and harsh marine weather.
*The warranty periods above are provided by the fabric manufacturer and cover the material itself. For details on what’s included in the warranty for your completed cover, please see our warranty page.
7 oz. Polyester — Our entry-level marine cover fabric, woven from 100% polyester fiber at a 7 oz. per linear yard weight. This lighter option keeps the cover manageable for solo handling while still delivering reliable protection against sun, rain, and debris. Backed by a 3-year fabric warranty. Ships in Black.
9 oz. Polyester — Step up to our heavy-duty polyester, engineered at 9 oz. per linear yard for boats that face tougher conditions or extended outdoor storage. The denser weave adds an extra layer of defense against abrasion and weather without adding unnecessary bulk. Protected by a 5-year fabric warranty. Ships in Navy or Black.
Sunbrella® — For boaters who want the best, our Sunbrella covers use 100% solution-dyed acrylic — the same fabric trusted by marine professionals worldwide. Naturally resistant to fading, mold, and water damage, Sunbrella holds its color and integrity season after season. Covered by a 6-year fabric warranty. Ships in Black, Smoke, or Marine Blue.
Both polyester options feature solution-dyed construction, where pigment is infused into each fiber during production rather than applied to the surface afterward. This process locks color deep into the material, preventing any dye transfer to your boat’s gel coat or finish. The result is a cover that stays vibrant without bleeding or rubbing off. Our polyester is also designed to breathe — it allows moisture trapped underneath to vent out naturally, reducing the risk of mildew and keeping your boat dry. The fabric holds its form without sagging or stretching over time, stays lightweight enough for one person to handle, and stands up to prolonged UV exposure and harsh marine weather.
*The warranty periods above are provided by the fabric manufacturer and cover the material itself. For details on what’s included in the warranty for your completed cover, please see our warranty page.
| Weight | 31 lbs |
|---|
Install
Please watch the video below for installation instructions!
No more offers for this product!
Frequently Asked Questions
The Pro-Line 21 T-Top cover is available in 9oz solution-dyed marine fabric for reliable 5-7 year protection, or premium Sunbrella acrylic for 8-10 years of UV and weather resistance. A lighter 7oz option is also available. All fabrics are solution-dyed through the fiber for colorfastness and long-term durability.
Yes. The Pro-Line 21 T-Top cover is pattern-cut with reinforced cutouts that wrap around the T-Top support legs. The cover drapes from the hardtop frame down to the rubrail, leaving the white fiberglass hardtop roof exposed on top while fully enclosing the hull, console, and cockpit below.
Installation takes one person under five minutes. Drape the cover over the bow, align the T-Top cutouts around the support legs, pull the fabric aft past the console and leaning post, then secure the adjustable strap-and-buckle tie-downs along the gunwale. No tools required.
No — please remove the cover before towing your Proline 21. Our covers are not designed to be trailered: towing with the cover on can cause severe damage to the cover and voids the warranty. The cover is designed for storage only — on a trailer, boat lift, dry stack, or jet dock — and comes off in minutes at the ramp.
Absolutely. The Pro-Line 21 T-Top cover creates a complete barrier over the helm console, fishfinder, GPS, VHF radio, leaning post cushions, and all cockpit surfaces. The water-repellent fabric blocks UV rays, rain, salt spray, and airborne debris that cause fading and deterioration.
Your Proline 21 cover is backed by our manufacturer's warranty for the original purchaser. Materials and workmanship — stitching, straps, buckles, zippers, and other hardware — are covered for 1 year from the purchase date. Fabric is covered for 3 years on 7oz, 5 years on black or navy 9oz, and 6 years on Sunbrella. Covered defects are repaired or replaced after you contact us for a Return Merchandise Authorization (RMA) number. The warranty does not cover improper use, accident or negligence, unauthorized modifications, improper care, mold or mildew, incorrectly placed orders, theft or loss, or acts of God — and traveling with the cover on or using it in the water voids the warranty. See our Warranty page for full details.
The Pro-Line 21 T-Top cover is water-resistant with a DWR (durable water repellent) finish that causes rain and spray to bead and roll off the fabric surface. The cover is also breathable, allowing trapped moisture and condensation to escape rather than pooling underneath — which prevents mildew growth.
Yes. This cover is designed to fit all standard production years of the Pro-Line 21 equipped with a factory T-Top. Since the 21's hull dimensions and T-Top mounting points have remained consistent across production, the cover fits all model years without modification.
The Proline 21 cover is available in 9oz solution-dyed polyester in Navy or Black, 7oz polyester in Black, or premium Sunbrella acrylic in Marine Blue, Black, or Smoke. Choose your fabric and color in the order options above.
Shipping is a $30 flat rate per cover within the continental United States. Because every cover is custom-made to order, please allow 1–3 weeks for your Proline 21 cover to be made and shipped — you'll receive tracking information as soon as it leaves our facility.
⏱️ Current lead time: 1–3 weeks — every cover is custom-made for your boat.
Questions about fit? Call (561) 677-2628
Questions about fit? Call (561) 677-2628
Proline 21 T-Top Boat Cover — Classic Carolina-Built Offshore Protection
The Pro-Line 21 is a 21’11” center console with an 8’6″ beam, weighing approximately 2,187 pounds and rated for up to 200 horsepower. Pro-Line Boats has been building saltwater fishing boats in Washington, North Carolina since 1968 — over five decades of Carolina coast craftsmanship. The 21 features a 19-degree deadrise that handles inlet chop with confidence, a 70-gallon fuel tank for full-day nearshore runs, and a 15-inch draft suited for both ramp access and offshore duties. This custom-fitted T-Top cover is part of a full line of center console boat covers designed to protect every layout from compact bay boats to offshore flagships.
Tailored to the Pro-Line 21’s No-Frills Fishing Layout
The Pro-Line 21 features a center console with recessed electronics, a padded leaning post, integrated rod holders, an aft livewell, and an uncluttered cockpit sole designed to maximize fishable space. This cover accounts for the T-Top support legs, the console profile, and the single transom-mounted outboard, draping from the hardtop frame to the rubrail with adjustable strap-and-buckle tie-downs. One person handles installation in under five minutes. Remove the cover before towing — it’s designed for storage, not highway travel. Stepping up in size, the Pro-Line 23 Sport T-Top cover offers the same tailored fit for Pro-Line’s larger models.
Protection That Matches Pro-Line’s Five-Decade Standard
Choose between 9oz solution-dyed marine fabric rated for five to seven years of UV and weather resistance, or premium Sunbrella acrylic for eight to ten years. Both fabrics are water-repellent with a DWR finish, mildew-resistant, and breathable to prevent condensation buildup. Double-stitched seams and a continuous hem cord at the rubrail create a tight, wind-resistant fit, and every cover ships with our warranty (1 year on materials and workmanship, plus 3–6 years on the fabric). Anglers running similar 22-foot platforms will find the same quality in covers like the Sea Born 22 FX T-Top cover.