Lopolight Circular Baseplate, For Horizontal Mount Lights, HDPE
Got questions? Ask an expert!
Know someone who needs this?
Share it with your crew or mechanic.
Overview
The Lopolight 400-404 is a circular HDPE baseplate that sits between a Lopolight horizontal mount light and the mounting surface. It keeps the light housing from touching metal directly, which helps reduce galvanic corrosion marks and surface wear when the fixture is installed on aluminum, stainless, or painted steel.
This is a non-electrical accessory with 0 mA current draw on both 12VDC and 24VDC systems, and it weighs 2.47 oz (0.07 kg). The light itself is sold separately.
Key features
- HDPE (high density polyethylene) isolation baseplate for Lopolight horizontal mount lights
- Breaks direct contact between an aluminum light housing and a metal mounting surface
- 0 mA current draw at 12VDC and 24VDC
- Lightweight at 2.47 oz (0.07 kg)
- Helps when mounting a horizontal light to a metal hardtop, arch, mast plate, or similar structure
Compatibility and fit
Use this baseplate with Lopolight horizontal mounted lights that call for a circular PE/HDPE spacer under the light. It does not affect wiring or electrical loading; it simply adds an insulating layer between the fixture and the boat.
If your installation uses a separate mounting base or adapter, confirm the baseplate is part of your intended stack-up so fastener length and seating stay correct.
Installation and setup
Dry-fit the baseplate at the mounting location, line up the fastener pattern, and make sure the surface is flat so the light sits evenly. If you bed the assembly, keep fastener holes sealed and avoid trapping water under the light.
Tighten fasteners evenly so the HDPE plate is compressed uniformly, then recheck after the first few runs for any settling.
Use on board
This is a good match for refits where a horizontal mount navigation light is moving onto a metal structure, or when corrosion staining shows up around the base from dissimilar-metal contact. It also helps on boats that see heavy vibration, where metal-to-metal rubbing can scuff finishes over time.
Maintenance and care
Rinse with fresh water during routine washdowns and inspect the mounting area during seasonal checks. If the plate shows deep grooves or deformation from over-tightening, replace it to keep the light properly isolated.
Shipping
We ship worldwide from the United States. Rates are calculated at checkout based on destination and package weight. Some items include free shipping, which will show automatically. Not every product is eligible for international shipping; checkout will confirm eligibility. We do not ship to PO Boxes except through USPS, and not all packages qualify.
Processing and dispatch
Most orders are verified, packed, and handed to the carrier within 1 to 2 business days. Some products may need extra handling time or ship directly from the manufacturer. For certain international orders, inventory transfers between warehouses may add time. If any delay is expected, we will let you know the dispatch date.
Delivery and tracking
Deliveries are handled by trusted carriers such as USPS, UPS, FedEx, and DHL. Estimated arrival times appear at checkout and depend on your location and the service you choose. These are estimates and can be affected by customs or carrier disruptions. A shipping confirmation with a tracking link is emailed when your order ships, and tracking may take up to 24 hours to update. You can also view tracking in your account.
Duties, taxes, and support
International customers are responsible for any customs duties, taxes, and fees charged by the destination country. If these charges are refused and a shipment returns to us, the carrier’s return cost and any re-entry customs fees will be deducted from the refund. If your order is late or you need help, contact cs@qualityboatparts.com and we will assist you.
Quality Boat Parts is a reseller. Many items include a manufacturer’s warranty, and all warranty service is handled directly by the manufacturer. We do not manage or administer warranty claims on behalf of customers.
Warranty terms, coverage, and duration are set by each manufacturer. Issues involving defects, repairs, or replacements must be addressed with the manufacturer’s support team. When available, the warranty period is listed on the product page. If it is not shown, contact us or the manufacturer for details before purchasing.
To start a claim, the customer must contact the manufacturer and follow their process. Keep your proof of purchase and original packaging, and register the product if the manufacturer requires it, as these are often needed for warranty service.
We are happy to help you find the right contact or documentation, but we cannot decide outcomes or intervene in claim resolutions. For guidance, email cs@qualityboatparts.com.