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Heavier compartment lids and hatch doors need more than a token gas spring to stay open, and this one is built for exactly that. Marine-grade 316 stainless steel resists the corrosion that eventually kills lesser struts, while 40 lb of force is enough to hold up bulkier doors that a 20 lb spring would let sag shut.
If your compartment door has started drooping or won't stay up on its own, this higher-force strut is a straightforward upgrade that should hold it open reliably again.
