Attwood Marine Ni-Slide Hatch Support Gas Spring, 36.30 in Extended, 21.10 in Compressed, 15.20 in Stroke, 13mm Socket

Overview

The Attwood Marine Ni-Slide Series is a gas spring range for boat hatches, locker lids, and other lift-support applications where the spring length, socket style, and output force need to match the existing hardware. This configuration uses a 36.30 inch extended length, 21.10 inch compressed length, 15.20 inch stroke, and 13 mm socket end type, giving buyers clear fit points before replacing an old support.

The Ni-Slide rod coating helps with corrosion resistance in saltwater areas, and the 10 mm rod by 22 mm cylinder sizing matches the SL29 gas spring format. It is a practical replacement choice when a hatch or lid needs controlled lift assistance without changing the surrounding boat hardware.

Key features

• 36.30 inch extended length, 21.10 inch compressed length, and 15.20 inch stroke for matching existing hatch support geometry.
• 13 mm socket end type for use with compatible ball-stud style mounting points.
• Output force options from 30 lb to 180 lb across the range, allowing the spring force to be matched to the weight and leverage of the hatch or lid.
• Ni-Slide rod coating supports corrosion resistance for use in saltwater areas.
• 10 mm rod by 22 mm cylinder sizing gives a clear reference when comparing against the spring being replaced.
• Gas spring format helps support controlled opening and holding of hatches, lockers, and similar marine access panels.

Variants

This Ni-Slide Series gas spring is offered in multiple output force options. The key difference across the range is the pound rating, from lighter 30 lb support up to heavier 180 lb support, while the listed SL29 configuration keeps the same 36.30 inch extended length, 21.10 inch compressed length, 15.20 inch stroke, and 13 mm socket format.

When replacing an existing hatch support, match the output force as closely as possible to the original spring, then confirm the extended length, compressed length, stroke, and socket size against the hardware on the boat. A force rating that is too low may not hold the hatch open properly, while a rating that is too high can make the hatch harder to close or add stress to the mounting points.

Installation and fit

Before installation, measure the current gas spring from socket center to socket center in both the open and closed positions when possible. The mounting brackets should line up without forcing the spring, and the socket ends should seat cleanly on the ball studs.

Gas springs are pressurized components, so they should not be punctured, heated, or modified. If the old spring is oil-filled or damaged, remove and dispose of it with care according to local requirements for pressurized and oil-containing parts.

Use cases on board

This range fits boats that need a replacement lift support for hatches, storage lids, access panels, and similar compartments where the SL29 length and socket configuration are already in use. It is most useful for owners, yards, and service techs who want to restore controlled hatch movement without changing the original mounting layout.

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.