Dress up your dock with a new Dock Box from Trionic Corp! Need a place to store your sunscreen, towels, and tools? You can store all of your outside essentials in a Trionic dock box. Depending on your situation, there are many different dock boxes to choose from. Choose from our line of Triangular or Rectangular Dock Boxes. Trionic Corp also offers a complete line of dock boxes and boating accessories. Trionic Corp also offers Dock Boxes in several different sizes to fit your individual needs.

From water holding tanks to tank systems, Trionic Corp has top of the line marina based products to satisfy your needs. 

There are many different types of dock boxes for your boat. Some of them are standard boat dock boxes, low-profile boat dock boxes, triangular boat dock boxes, seat-top or bench boat dock boxes, and upright storage lockers. There are a few specifications that a great dock box must-have. You want your dock box to be weather and waterproof too withstand harsh conditions. Trionic Dock boxes are waterproof and can safely store your valuable itmes. The dock boxes at Trionic Corp are made from impact-resistant polyethylene, (LLDPE), which is formed by rotational molding processes. Unlike the fiberglass dock boxes, Trionic Corp dock boxes don’t need to be waxed and can easily be cleaned using a rag and soap.  

          Triangular Dock Box              Rectangular Dock Box                Dock Box Accessories 

Check out these dock box products from Trionic Corp

Beautify your marina and add comfort and storage. Trionic Corps products are some of the most attractive and efficient on the market. Our polyethylene dock collection is the best option for marina and harbor owners. industrial strength and good looking. Polyethylene dock boxes will look great on your dock or marina for years to come. Trionic Corps main goal is to provide a high-quality product at reasonable prices.  Trionic Corp offers a variety of dock boxes and accessories to suit your needs.

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Trionic Corp Warranty

Cleaning

Trionic Corp's roto-molded polyethylene products (dock boxes, dock boarding steps, marina trash cans, and water tanks) are built to be long-lasting and require low maintenance.  For the products typically used outdoors, UV inhibitors are included to maintain a bright white appearance.  The smooth finish of these products also makes cleaning them quite easy.  We do recommend that you occasionally wipe down your dock boxes, steps, and trash cans with a damp cloth to keep them looking great.  If your run into any stains or dirt that isn't easily removed, we recommend an environmentally safe cleaning product that won't have an impact on the water quality around the docks.  There are a number of different cleaners available that fit this description, but an inexpensive product like Simple Green Marine All-Purpose Boat Cleaner is a good choice.  

Broken Hinges or Cables

If you run into an issue where a hinge or lid retention cable becomes damaged, replacement parts are available to quickly and easily repair the product.  Swapping these parts only requires a wrench and a screwdriver and can be completed in a matter of minutes.

Leaking Fittings

Always inspect fittings to be sure no cracks or breaks have occurred and replace fittings as needed.

If a threaded fitting is leaking, we would suggest adding Teflon tape around the threads and reseating the fitting.

If a compression fitting is leaking, it may need to be replaced.  The condition of the edge of the hole in the tank should also be inspected to be sure a clean square cut with no burrs or rough edges.

For a leaking deck plate, you can add silicone sealant under the deck plate flange.  Be sure to remove any old sealant before applying new sealant.  

Vacuum Relief Valve

If your vacuum relief valve is stuck, unscrew the cap and check the rubber disc. Put some Vaseline under the rubber flapper where it sits up against the white plastic.

Cracked Water Tank

For a hairline crack in a polyethylene tank:

1. Drill 1/8" hole on both ends of the crack.

2. Scrape out a 1/16 to 1/8 deep V-Groove in between the 1/8" holes.

3. Cut 1/8 diameter polyethylene rod to fit 1/8 holes and groove.

4. Use the blue tip of flame from a propane torch to just touch the groove and pass across 3 to 4 times to warm up the surface.

5. Position the rod into the groove.

6. Use the torch to heat up the rod until it turns clear and then use a putty knife to push the soft rod material into the groove. 

7.  Allow to cool and check to see that the crack has been sealed.  If not, you should replace the tank.  

An updated 2022 Trionic Corp Product Catalog is coming soon!

Downloadable PDF Files - Click the links below

Trionic Corp Dock Box Assembly Instructions - All Models

Trionic Corp UFA Custom Fittings - Installation Instructions

Trionic Corp Custom Fitting Location Kit - CF-60 - Installation Instructions

Trionic Corp Vacuum Relief Valve - VR00015 - Installation Instructions

Trionic Corp Pump Out Tube - DT-30 - Installation Instructions

Sensatank Marine 100 Tank Level Monitoring System

Installation Video for Compression Fittings (UFA 1/2", UFA 3/4", UFA 1-1/2", UFA 3", and CF-60 Kit)

Marketing Flyers - Digital & Downloadable Product Information Sheets

Trionic Corp Dock Boxes Marketing Flyer

Trionic Corp Water & Holding Tank Marketing Flyer

Trionic Corp Dock Cart Marketing Flyer

Trionic Corp Dock Spill Kit Marketing Flyer

Trionic Corp Dock Boarding Steps and Marina Trash Can Marketing Flyer

Practical Sailor Premium Holding Tank Recommendation

 Bulk Purchases:

Q: Does Trionic Corp offer wholesale or dealer pricing?

A:  Yes, we offer volume discounts to our commercial customers and can also arrange dealer pricing for customers who are reselling our products to their customers.  Contact us to discuss your specific situation. 

Shipping:

Q:  Why can’t I get a shipping quote on the website?

A:  Because many of the products Trionic Corp sells are large and heavy, they can not be shipped via UPS.  As a result, we must calculate a freight quote with a shipping company to accurately provide you with your total shipping charge prior to you placing an order.  Freight prices are also impacted by whether you have a forklift available to unload pallets when receiving the shipment, and whether the shipping destination is a commercial or residential area.

Q: How can I minimize freight costs?

A:  It is beneficial to order in quantities that completely fill a pallet to keep the cost per unit shipped down.  When ordering dock boxes, they come nested to maximize the number that can fit on a pallet and minimize the cost associated with transport.  Bulk orders of dock boxes do require that the lids be assembled to the boxes during installation.  This process is fairly quick and any incremental labor is cost justified by the saving in freight costs. 

Returns:

Q:  How do I return a product?

A:  Call 262-268-9240 to get a Return Material Authorization.  If you are returning a product that is unused, it must be received by Trionic within 30 days of order date.  If you have a warranty issue, we will explore options to best resolve the issue to your satisfaction.  We are unable to accept returns of products that have been used and are not in their original packaging unless there is a warranty issue.  The customer is responsible for all shipping charges related to returns. 

Tank Installation:

Q:  When installing fittings, how close to the bottom of the tank can they be located?

A:  For a ½” fitting, drill no closer than ¾” from the bottom of the tank.

For a 1 ½” fitting, drill no closer than 1 1/8” from the bottom of the tank.

Remember that Trionic Corp tanks are 3/8” thick so you need to leave at least 1/2” clearance on the sides and top as well. 

Q:  Do I use sealant or Teflon tape for my tank hose adapters?

A:  The answer is dependent upon what type of fitting you will be using.  For the straight fittings, 3M 4200 or 5200 is most recommended to be used on the threads.  For the 90-degree fittings, Teflon tape is most recommended as the tape will help orient the fitting in the direction required.

For all fittings, hand tighten first and then use a wrench. You need to be careful not to overtighten to avoid stripping the threads.

Q:  My vacuum relief valve is stuck open - now what?

A:  Unscrew the cap and check the rubber disc. Put some Vaseline under the rubber flapper where it sits up against the white plastic.

Dock Products:

Q:  How much weight do your dock steps hold?

A:  Maximum weight on the steps is recommended 300 LBS.

Q:  Can I order a replacement lid for my dock box?

A:  No.  The dock boxes and lids are molded at the same time, so we have a new box manufactured each time a lid is make. 

Q:  Can I order hardware for my dock box?

A:  Yes, you can purchase a Hinge Replacement Kit or a Cable Replacement Kit in the Dock Box Accessories section of our website.

Q:  What are your dock boxes made of?

A:  Roto-molded Linear Low-density Polyethylene

Q: How are dock boxes attached to the dock?

A:  Typically screws or bolts with washers are placed through the inner floor of the dock box to attach it to the dock.  Holes can be drilled anywhere in the floor of the dock box to allow optimal placement of hardware to secure the dock box.

Q:  Do dock boxes have to be secured to the dock?

A:  Customers are strongly encouraged to use hardware to attach the dock box to the dock or deck.  Wind, waves, and tides can easily sweep away a dock box that is not secured to the dock. 

Q:  Are gas shock or cylinders available for the lids of dock boxes?

A:  Yes, Trionic Corp offers gas shocks that control the opening and closing of the lids of dock boxes.  In salt environments, we recommend the use of retention cables for longer life of the products.

Q:  Can we sit on our Trionic dock box?

A:  Yes, the lids are designed to support someone sitting on the box.  The lid will flex but will not sustain damage of loads up to 300 pounds. 

Q:  What should we use to clean our dock box?

A:  Because dock boxes are typically used around water, we recommend using an environmentally friendly cleaner like Simply Green Marine All Purpose Boat Cleaner or other mild boat cleaners. 

Tank Products:

Q:  Can Trionic Corp customize the locations and/or fittings on a tank?

A:  Custom fitting locations are available for orders of five (5) or more of the same tank.  You will incur an incremental charge for this customization work.  We do sell blank tanks that have no predrilled holes and fitting kits that will allow you to locate the fittings in any location you may require

The process to install the fittings is simple and you can find a video demonstration conveniently located on the trioniccorp.com site on the relocation kit page.

Q:  What are your water/holding tanks made of?

A:  Roto-molded Linear Low-density Polyethylene

Q:  Can I have a custom water tank or holding made?

A:  Trionic Corp can create custom tanks, but we require a minimum tank order quantity of 25 tanks at an agreed-upon price to justify the tooling expense. 

Q:  Can I install metal fittings on my tank?

A:  No, metal fittings are not compatible with the polyethylene tank.  Use of metal fittings voids any Trionic Corp warranty. 

Q:  Can fittings be installed on the very bottom of the tanks?

A:  We do not recommend this approach.

Q:  Can I flip a tank on its side for installation?

A:  The bottom of the tank needs to be fully supported.  The orientation may depend on the size and dimensions of the tank in question.  

Q:  What do I do if my holding tank smells bad?

A:  If your holding tank vent filter is more than 6 months old, replace that.  Also wrap a warm wet rag around hoses and leave for 5 minutes. If the rag smells afterward, your hoses are permeated and it’s time to replace the hoses.  If the hoses are not permeated, it may be time to replace the tank. 

Q:  What do I do if the water in my freshwater tank smells bad?

A:  Fully drain the water in the tank.  Then connect a source of fresh water and flush the tank through one or two times.  If the smell persists, add a water tank & system flush product per the product directions to flush the system.  To avoid future occurrences, fully drain the freshwater tank between boating seasons. 

Q:  What size replacement vent filter should I buy?

A:  Measure the thread diameter of the hose and order the vent filter cartridge with the proper fitting size.

Q:  My shower sump tank stopped working, any suggestions?

A:  First clean the switch. Also check for loose wiring connections and availability of power. If that doesn’t resolve the issue, it’s possible the switch, pump or both may need to be replaced.

Q:  How thick are the walls of your tanks?

A:  Our tanks have an average wall thickness of 3/8” and can be thicker at the corners, providing additional strength and durability. 

General Product Information:

Q:  Where are your dock boxes & water/holding tanks manufactured?

A:  Wisconsin – With very few exceptions, all of the products offered by Trionic Corp are made in the USA.

Q:  Does Trionic Corp offer a Warranty?

A:  Trionic Corporation ("Trionic"), warrants its products to be free from manufacturing defects in material and workmanship for a period of one year after the date of purchase. Trionic will replace product free of charge or at its option repair free of charge product returned to Trionic, transportation prepaid, which upon Trionic’s inspection is determined to be defective. Warranty is void if product has been altered, abused, neglected, improperly installed or damaged in transit. Trionic makes no warranty other than stated above. All other warranties expressed or implied including any implied warranties of merchantability or fitness for a particular purpose are hereby excluded to the extent exclusion is permitted by law, and any such warranties not so excluded are hereby limited in duration to the warranty period expressed above. Liability for any incidental or consequential damages under any and all warranties is hereby expressly excluded. Some states do not allow the exclusion or limitation of incidental or consequential damages, or limitation on how long an implied warranty lasts, so the above limitation or exclusions may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.

Q:  What else do you sell?

A:  In addition to Dock Box and Water/Holding Tanks, we offer Shower Sump Tanks, Dock Boarding Steps, Trash/Recycling Bins, Dock Carts, Spill Kits, Holding Tank Vent Filters, a full line of Regulatory Buoys, Mooring Buoys, Channel Markers, and Solar Marine Lights.

If you don’t see an answer to your question, please call us at (262) 268-9240 and allow us to quickly provide you with all the information you need to make an informed decision.  Customer service is our top priority. 

Tank Quick Reference Guide

To view a product page including a tank drawing, click the model numbers below.  Note that some larger tanks must ship via a freight carrier.  Request a quote for these tank sizes so that an accurate shipping charge can be calculated prior to an order being placed.  

DOCK BOXES FOR MARINAS AND BOAT DOCKS
HEAVY-DUTY CONSTRUCTION DOCK BOXES BY TRIONIC. STRONGER THAN FIBERGLASS.

Trionic Corp fabricates the best dock box on the market, with installations in marinas across the United States and around the globe.  These dock boxes are produced using impact-resistant polyethylene (LLDPE) which is formed using rotational molding processes.  The final product offers a durable, smooth surface that holds up and maintains its bright white appearance for years due to the inclusion of UV inhibitors.  Unlike fiberglass dock boxes, Trionic Corp boxes don’t need to be waxed and can be easily cleaned with a damp rag or soap and water.  All the stainless-steel hardware used on the box is made to withstand years of salt water exposure.  The nylon hinges are a better option that won't get damaged if the lid flips back beyond horizontal. The rugged lock plate offers outstanding security.  Plus, these dock boxes look great.

Product Features:

Hammer Tested for Impact Resistance

Lockable Reinforced Cover – Doubles as Seating

Easy to Assembly Nylon Hinges with Stainless Steel Hardware

Cover Restrained with Stainless Steel Cables (Gas Shocks Available)

Long Term UV inhibitors protect against the sun’s rays

All Materials are Fully Recyclable

Available in White, White Granite, or Custom Colors for Bulk Orders

Advantages of Trionic Corp Polyethylene Dock Boxes over Fiberglass Dock Boxes

• Superior Impact Resistance – Won’t Break or Crack
• Low Maintenance – No Waxing Required
• Will Not Become Chalky Over Time
• Will Not Develop Spider-Web Cracks and Stress Fractures
• Will Not Produce Splinters
• Nylon Hinge Design Won’t Be Damaged if Lid Flips Over
• Hinges are Easily Replaced if Needed
• Stainless Steel Lock Hardware Eliminates Latch
• Fully recyclable

Gas cylinders are available as an option on all Trionic Corp dock boxes.  These are not recommended for heavy saltwater exposure as they don’t hold up as well as stainless steel retention cables.    

If you have any doubt about the durability of the Trionic Corp dock boxes, take a few seconds to watch the video below.  The “hammer test” doesn’t lie.  Fiberglass dock boxes are far more susceptible to damage as the result of an impact, which is certainly a common occurrence on boat docks.