GSNI-4900-15
15 lb model; verify 7.5 in extended and 5.25 in compressed against the old part.
Identify JR Products GSNI 7½-, 10- & 12-Inch Lift Supports
If a small RV compartment door or folding platform has a missing gas support, its overall length is only the first clue. JR Products makes three compact GSNI groups—7½, 10 and 12 inches—with multiple push-force ratings. Use the original markings, compressed length and socket configuration to identify the proper replacement.
Identify each original gas support
These seven models cover three different compact lengths. All have 6 mm rods, 15 mm tubes and plastic ball-socket ends.
| Exact MPN | Extended | Compressed | Stroke | Force | Rod / tube |
|---|---|---|---|---|---|
| GSNI-4900-15 | 7.5 in | 5.25 in | 2.25 in | 15 lb | 6/15 mm |
| GSNI-4900-40 | 7.5 in | 5.25 in | 2.25 in | 40 lb | 6/15 mm |
| GSNI-4900-60 | 7.5 in | 5.25 in | 2.25 in | 60 lb | 6/15 mm |
| GSNI-5000-20 | 10 in | 6.41 in | 3.59 in | 20 lb | 6/15 mm |
| GSNI-5000-60 | 10 in | 6.41 in | 3.59 in | 60 lb | 6/15 mm |
| GSNI-5100-30 | 12 in | 7.91 in | 4.09 in | 30 lb | 6/15 mm |
| GSNI-5100-40 | 12 in | 7.91 in | 4.09 in | 40 lb | 6/15 mm |
Measurement key: extended and compressed lengths are measured between the centres of the mounting ends; stroke is the piston travel between those positions. The rod and tube measurements are diameters, in millimetres. Read the manufacturer gas spring fit-and-selection diagram (PDF) for the measurement illustration.
Same length does not mean same force. The GSNI-4900 family has 15, 40 and 60 lb options. GSNI-5000 has 20 and 60 lb versions; GSNI-5100 has 30 and 40 lb versions. Do not increase the force because a hatch is difficult to open until the original specifications and hinges have been checked.
How to identify a removed support
- Check the original label: record the complete GSNI number and push-force value, not just 4900, 5000 or 5100.
- Measure end-to-end: measure the fully extended spring between the centres of the mounting ends, then compare the compressed length or rod travel.
- Check the mounting ends: these parts have plastic sockets. Confirm that the ball studs and retaining clips match the originals.
- Inspect the hinge: an obstructed compartment door can appear to need a stronger strut when the real issue is a binding hinge or mounting bracket.
Secure the compartment door or platform before removing a gas spring, and do not puncture, heat or dismantle a pressurized support. The manufacturer force rating is a push force, not the door's rated weight.
Catalog products by exact MPN
Each product link opens its UsedRVParts catalog record. Check the individual listing's condition and availability; viewing and pickup in Kelowna are by appointment.
GSNI-4900-40
40 lb model; verify 7.5 in extended and 5.25 in compressed against the old part.
GSNI-4900-60
60 lb model; verify 7.5 in extended and 5.25 in compressed against the old part.
GSNI-5000-20
20 lb model; verify 10 in extended and 6.41 in compressed against the old part.
GSNI-5000-60
60 lb model; verify 10 in extended and 6.41 in compressed against the old part.
GSNI-5100-30
30 lb model; verify 12 in extended and 7.91 in compressed against the old part.
GSNI-5100-40
40 lb model; verify 12 in extended and 7.91 in compressed against the old part.
Other lift-support references
For longer replacement options, compare the 13.98–18-inch GSNI identification guide, or the existing 20-inch GSNI-5300 chart. For general cabinet mechanisms, see the cabinet hardware and supports reference.
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