Hardline Products 3" USA Series 300 Boat Registration Numbers Kit — Silver/Black Carbon Fiber, UV & Fuel-Resistant Marine Vinyl

Hardline Products Series 300 is a complete set of 3-inch marine-grade registration numbers and letters in a silver/black carbon-fiber style, built to resist sun, fuel, and wear while meeting USCG display rules.

Give your boat, PWC, or kayak a professional, factory-finish registration display without resorting to flimsy mailbox lettering. These decals are printed on durable 4‑mil vinyl, sealed with a UV-protective gloss, and supplied as a full DIY kit so you can mark both port and starboard sides with matching style. The pressure-sensitive adhesive bonds strongly to common hull materials, and the carbon-fiber look adds visual depth while remaining fully compliant with USCG sizing.

How will these decals hold up in sun, salt, and fuel?

The Series 300 material is engineered for marine exposure. A UV gloss topcoat reduces color fade and prevents the common yellowing and cracking seen in cheap stickers. The vinyl formulation also offers resistance to fuel splashes and light abrasion, so the numbers keep their look on active boats and PWCs.

• 4-mil marine vinyl with UV-protective gloss
• Fuel-resistant surface layer for spill exposure
• Scratch-resistant finish for docking and trailering

Will these stick to my hull material and uneven surfaces?

Yes — the kit uses a pressure-sensitive Super-Stick adhesive that adheres aggressively to a variety of hull finishes. It performs well on smooth fiberglass, painted or powder-coated aluminum, and many textured plastics, allowing for a secure bond even on slightly contoured or textured areas.

• Strong permanent adhesive for long-term mounting
• Conforms to mild surface contours and textures
• Works on fiberglass, aluminum, gelcoat, and plastics

How many characters are included and is it enough for two sides?

The kit contains 146 decals in a complete assortment of letters and numbers, providing four sets of A–Z and four sets of 0–9. That supply is intended to let you display registration on both the port and starboard sides with matching type and style, plus extras for mistakes or future reapplication.

• 4 sets of letters A–Z for duplication on both sides
• 4 sets of digits 0–9 for multi-vessel use or spares
• Additional characters included for corrections and customization

How easy is installation and what tools are recommended?

Installation is simple and designed for DIY application — just peel and press. For the best long-term adhesion, clean the surface thoroughly and apply at moderate temperatures. Use a squeegee or a soft cloth to remove air bubbles and ensure full contact across curved areas.

• Peel-and-stick application — no adhesives or solvents required
• Clean, dry hull surface and moderate temperature recommended
• Squeegee or soft cloth to smooth and remove bubbles

Who is this for? The Hardline Products Series 300 kit is aimed at boat owners, PWC enthusiasts, marina operators, and anyone who wants a durable, coordinated registration display that looks custom-installed. It's especially useful for owners who need USCG-compliant sizing combined with a stylish carbon-fiber appearance and long-lasting performance on a range of hull materials.