
Future Fin Boxes are a type of surfboard fin box known for their versatility, durability, and user-friendliness. They come in two sizes: a 1/2 center box and a 3/4 rail box, allowing surfers to customize their setup according to their riding style and preferences. The boxes are designed to provide stability, control, and maneuverability, enhancing the surfing experience. They are compatible with a wide range of surfboards and fins, making them a popular choice for beginners and professionals alike. Future Fin Boxes are also known for their superior strength and ease of installation, requiring minimal effort and tools. With their unique design features, they have become a must-have for surfers seeking to improve their performance and take their wave-riding to the next level.
| Characteristics | Values |
|---|---|
| Fin Box Depth | 1/2", 3/4" |
| Fin Box Width | 7 mm, 7.2 mm |
| Fin Height | 4.64", 4.39", 4.37" |
| Fin Base | 4.55", 4.34", 4.22" |
| Fin Area | 15 sq. in, 14.52 sq. in, 14.22 sq. in |
| Fin Types | Tri Fin, Quad Front Fins, Quad Fins |
| Fin Materials | Thermotech Plastic, Nylon Plastic, Fiberglass |
| Fin Box Colors | Orange, Green, Blue, Black, White, Yellow, Red, Purple |
| Fin Box Technology | Iterlaminate Technology (ILT) |
| Installation | Easy, Minimal Effort and Tools |
| Compatibility | Various Fin Types and Surfboards |
| Performance | Stability, Control, Maneuverability, Flexibility |
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What You'll Learn

Fin box installation kits
Fin boxes are an essential component of surfboards, and Futures Fins offers a range of installation kits to cater to different needs. The type of fin box and installation kit you choose will depend on the specific requirements of your surfboard and your surfing style.
One option is the 2-Pass Installation Kit, which is used for installing Futures Fins Boxes after lamination. This kit includes a router slide with a faceplate, a jig plate router guide, a 1/2" insert for the jig collar, a jig plate, a 1/4" one-pass bit, a Timmy tool, four EVA shims, a fin mark target, and dummy fins. It is designed to make the installation process safer and simpler, especially for those who might be using a trim router for the first time.
Another option is the ILT One Pass Installation Kit, which is available in a range of colours, including orange, green, blue, black, white, yellow, red, and purple. This kit features Futures Fins Iterlaminate Technology, which promises a stronger box install.
The Future Style Fin Box Installation Kit by Greenlight Surf Co. is another option designed for the DIY home surfboard builder. This kit offers a cost-effective alternative to professional fin box install kits, and it includes a practice sheet of foam so you can master the routing technique before applying it to your surfboard.
When installing fin boxes, it's important to note that for plastic fin boxes to bond properly with resin, it is recommended to scratch the boxes with 80-grit before installation. Additionally, masking tape with resin-resistant adhesive can be used to tape over the opening of the fin boxes before glassing them over.
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Fin box colours
Fin boxes are available in a variety of colours, including black, white, merlot, jade, graphite, red, blue, lime green, orange, yellow, purple, and white. The colour options depend on the size and type of fin box.
For example, the 1/2" ILT Fin Box is available in black, white, merlot, jade, graphite, red, and blue. The 3/4" ILT Fin Box is available in black, white, graphite, lime green, and purple.
The 10.75" US fin box by Futures Fins is available in black and white, while the 8.5" US fin box by Fins Unlimited is available in white and black.
The UP100 3pcs/Set Future Tri Fins Box Fins are available in black, blue, and white, while the SIUKE Tri Fin Box 3 Pack is available in white.
It's important to note that when ordering a fin box, you should ensure that you choose the proper tang depth (1/2" or 3/4") by referring to the fin tongue measurement on your fins.
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Fin box sizes
Fin boxes are available in a variety of sizes, depending on the type of fin and board they are intended for. The depth and width of the fin cavity are important factors in determining the size of the fin box.
For example, the standard depth of the cavity for US fin boxes is typically 1" (2.54 cm) deep and 1" (2.54 cm) wide, accommodating a standard fin thickness of 0.95 cm or 3/8". The length of the fin box can vary depending on the type of board, with shorter boxes for single boards and longer boxes for longboards. For instance, an 8" (20.30 cm) US fin box by Futures Fins is suitable for single boards shorter than 8', while a 10.75" (27.31 cm) US fin box by Futures Fins is recommended for longboards measuring 8' and above.
Similarly, the depth of the fin cavity for Futures Fin Boxes can be either 1/2" or 3/4" deep. The 1/2" deep fin box is compatible with fins featuring a 1/2" tang, such as thruster center fins and smaller quad fins. On the other hand, the 3/4" deep fin box is designed for fins with a 3/4" deep tang, including side fins in thrusters and sidebites, as well as larger quad fins.
In addition to the depth of the fin cavity, the height, base, and area of the fin itself are also important considerations when selecting the appropriate fin box size. For instance, the Futures Fins 464X F8 Tri-Fin set features a fin height of 4.64", a base of 4.55", and a fin area of 15 sq. in. The corresponding fin boxes for this set are sold separately.
It is worth noting that some fin boxes, such as the Fins Unlimited 10.5" Center Fin Box, are designed for the fixation of removable fins for longboards, egg and bonzer shapes, or stand-up paddleboards. This particular fin box is meant to be installed after the hotcoat process or used as a replacement during fin box repair.
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Fin box materials
Fin boxes are essential components on boards and help to convert the forces provided by wind or paddle into forward motion. They also provide some stability, lift, and sometimes drag. Most importantly, fins work to keep the board on track.
Fins are typically made from fibreglass or carbon materials, although some budget options are made of moulded plastic. At the base, they attach using one of several fin box systems. There are currently 5 major fin box styles that are in common use today.
The original fin box is the "US Box" (also known as "American" or "Chinook Slot"), which is still commonly used on SUP boards and some windsurfing waveboards. The fin slides into the slot on a pin and is secured with a small plate and screw. There are two varieties: the "A" box, which has a depth of 2.5cm (1"), and the "E" (European) box, which has a depth of 3cm (1.25").
The "Trim Box", designed by Bic Sport, features plastic spacers to enable the proper positioning of the fin inside the track. The "Power Box", developed for F2 and Mistral boards, has a taper on the sides, front, and rear, providing a very solid fit.
The "Tuttle Box" system is considered the strongest fin attachment system, with a straight-sided box and a fin base measuring 1.60cm (0.625″) across.
Some fin boxes are made from plastic, such as the UP100 3pcs/Set Future Tri Fins Box, which is made from superior nylon plastic materials to bear water pressure and UV rays. Fin boxes can also be made from Future's Thermotech plastic, which is used for the brand's quad front fins.
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Fin box manufacturers
There are several fin box manufacturers that produce fin boxes for surfing. Fin boxes are sold by Futures Fins US, which offers a range of colours, including white, black, merlot, jade, red, blue, and lime green. Fin boxes are also sold by Greenlight Surf Co., which offers a Future Style Fin Box Installation Kit, as well as a range of FCS Fin Boxes. Amazon also sells fin boxes, with the UP100 3pcs/Set Future Tri Fins Box Fins for surfing being one option. Fiberglass Supply sells Futures Fin Boxes and installation kits, which come in a variety of colours, including orange, green, blue, black, white, yellow, red, and purple.
Fin boxes are an essential component of a surfboard, and they are used to attach fins to the board. The fins provide stability and control when surfing, and the type of fin box can affect the performance of the board. Fin boxes are typically made from plastic or resin, and they are bonded to the surfboard using resin or glue. It is important to properly prepare the fin boxes before installation to ensure a strong bond, and this may involve scratching the surface or using tape to cover the opening.
There are several types of fin boxes available, including the ILT Fin Box, the Longboard Fin Box, and the Future Style Flanged Fin Box. The ILT Fin Box is available in different depths, including 1/2" and 3/4", and it accepts fins with a corresponding tang depth. The Longboard Fin Box is typically longer, ranging from 8.5" to 15" in length, and is designed for use with longboards. The Future Style Flanged Fin Box has a 1/2" deep tail box for centre fins and quad rears, and a 3/4" deep rail box for front fins.
When choosing a fin box, it is important to consider the type of surfing and the conditions in which the board will be used. Different fin boxes may be better suited to certain types of boards, such as longboards or shortboards, and the number and arrangement of fins can also vary. For example, a tri-fin set typically has three fins, with a deeper tang on the side fins and a shorter tang on the centre fin. Additionally, the material of the fin box can be a factor, as some materials may be stronger or more durable than others.
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Frequently asked questions
A Futures Fin Box is a high-quality, durable and versatile surfboard fin box. It is designed to enhance performance and flexibility for surfers of all levels.
Futures Fin Boxes come in two types: the 1/2" centre box and the 3/4" rail box. The centre box is for centre fins and quad rears, and the rail box is for front fins.
Futures Fin Boxes are made from a variety of high-quality materials, including plastic, resin and fiberglass. Some boxes feature Interlaminate Technology for stronger installation.
Futures Fin Boxes offer superior strength, stability, control and manoeuvrability. They are also incredibly versatile and compatible with a wide range of surfboards and fin types, allowing for customisation according to personal preferences.
Futures Fin Boxes are available from a variety of online retailers, including Amazon and specialist surf shops such as Fiberglass Supply and Fiberglass Florida.











































