- 1655 Whyte Ave, Vancouver, BC
- Open 7 Days: 6:30 AM - 8:00 PM PDT (GMT-7)
Marine-grade Attwood SpringLift gas spring with 7.5″ extended length, 5.25″ compressed length, 10 mm composite ball socket ends, and 20 lb lifting force for compact boat hatches, lids, compartments, covers, and access panels.
CAD $38.99
Ships/Pickup in 1–2 Days
The Attwood SpringLift SL31-20#-5 gas spring is a compact marine-grade lift support designed for smooth, controlled opening and closing of small boat hatches, lids, storage compartments, covers, doors, and access panels. With a 7.5″ extended length, 5.25″ compressed length, 2.25″ stroke, and 20 lb force rating, it is a dependable replacement choice for tight installations that require light-duty lift assistance.
Attwood SpringLift gas springs are popular replacement lift supports for marine and RV hardware applications where reliable performance, smooth operation, and corrosion resistance matter. This model is a strong choice when replacing an existing 7.5″ x 5.25″ ball-mount gas spring with a 20 lb pressure rating.
This SpringLift gas spring is made with environmentally responsible, water-safe grade oil and designed for demanding boating conditions. Attwood gas springs are tested for salt-spray resistance and long service life, making them a dependable choice for frequently used hatches, covers, compartments, and access panels.
The 10 mm composite ball socket end fittings are designed to attach to compatible 10 mm ball-stud mounting brackets. Mounting brackets are sold separately, so existing hardware should be checked for compatibility before installation.
| Manufacturer | Attwood |
| Model | SpringLift |
| Part Number | SL31-20#-5 / SL31-20-5 |
| Product Type | Marine Gas Spring / Lift Support |
| Extended Length | 7.5″ |
| Compressed Length | 5.25″ |
| Stroke / Travel Length | 2.25″ |
| Force Rating | 20 lb |
| Rod Diameter | 8 mm |
| Cylinder Diameter | 18 mm |
| End Fitting Style | 10 mm Composite Ball Socket |
| Mounting Brackets | Sold separately |
Attwood has taken the guess-work out of selecting a replacement gas spring. Simply match up the existing spring to the dimensions and pressure ratings shown in the chart.
| Extended Length | Compressed Length | Stroke | Standard Pressure | End Fitting Type | Aftermarket Packaging Part Number |
|---|---|---|---|---|---|
| 8 x 18 – 8 mm Rod x 18 mm Cylinder | |||||
| 10.00″ | 7.00″ | 3.00″ | 20 lb | 10 mm Socket-Composite | SL30-20-5 |
| 10.00″ | 7.00″ | 3.00″ | 40 lb | 10 mm Socket-Composite | SL30-40-5 |
| 10.00″ | 7.00″ | 3.00″ | 60 lb | 10 mm Socket-Composite | SL30-60-5 |
| 7.50″ | 5.25″ | 2.25″ | 30 lb | 10 mm Socket-Composite | SL31-30-5 |
| 12.04″ | 8.46″ | 3.58″ | 40 lb | 10 mm Socket-Composite | SL35-40-5 |
| 12.04″ | 8.46″ | 3.58″ | 50 lb | 10 mm Socket-Composite | SL35-50-5 |
| 15.00″ | 9.50″ | 5.50″ | 20 lb | 10 mm Socket-Composite | SL33-20-5 |
| 15.00″ | 9.50″ | 5.50″ | 40 lb | 10 mm Socket-Composite | SL33-40-5 |
| 15.00″ | 9.50″ | 5.50″ | 60 lb | 10 mm Socket-Composite | SL33-60-5 |
| 17.20″ | 10.20″ | 7.00″ | 40 lb | 10 mm Socket-Composite | SL36-40-5 |
| 17.20″ | 10.20″ | 7.00″ | 90 lb | 10 mm Socket-Composite | SL36-90-5 |
| 20.00″ | 12.00″ | 8.00″ | 20 lb | 10 mm Socket-Composite | SL34-20-5 |
| 20.00″ | 12.00″ | 8.00″ | 30 lb | 10 mm Socket-Composite | SL34-30-5 |
| 20.00″ | 12.00″ | 8.00″ | 60 lb | 10 mm Socket-Composite | SL34-60-5 |
| 20.00″ | 12.00″ | 8.00″ | 80 lb | 10 mm Socket-Composite | SL34-80-5 |
| 20.00″ | 12.00″ | 8.00″ | 120 lb | 10 mm Socket-Composite | SL34-120-5 |
* Packaged in see-through hanging packages.
| Weight | 1 kg |
|---|---|
| Dimensions | 25 × 10 × 10 cm |
| Country of Origin | US |
| HS Code | 83024900 |
CAD $28.99
Ships/Pickup in 1–2 Days
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