Patio enclosure screen doors live a hard life — pool humidity, daily slamming, and hinges that eventually sag until the door scrapes and the latch misses. When the door itself is fine, the fix is the hinge pattern it was built with, and for a huge share of aluminium enclosure doors that pattern is this one: an extruded aluminium hinge with a 1/8 inch grooved centre.
This is a 3-pack of those hinges in matte black — retailer listings for this exact set name it as the SyunsXoon 138-5316W3 — sized at 5-1/8 inches long with a 1 inch leaf. The manufacturer rates the fit for most screen doors, including Larson, EMCO and Lanai patio enclosure doors. Amazon buyers rate the set 4.6 out of 5 across 217 ratings.
Disclosure
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The short answer
Buy this 3-pack if your aluminium screen or storm door’s hinges match the grooved-centre pattern: extruded aluminium that won’t rust in pool and patio duty, matte black, one pack per door, rated 4.6 out of 5 across 217 ratings. Skip it if your door hangs on standard mortised butt hinges, or your old hinges measure differently — compare the 5-1/8 inch length and the 1/8 inch groove against the hinge you take off.
What you’re getting
Three non-mortise hinges in extruded aluminium. The defining feature is the centre leaf’s groove — a U-shaped indentation 1/8 inch deep that keys into the door and frame profiles used on aluminium enclosure doors, which is what makes the fit work across so many brands’ doors. Nothing is mortised; the hinges screw straight on with a screwdriver.
Aluminium is the right material for the job these doors do. Screen doors around pools, lanais and patios live in permanent humidity, and extruded aluminium does not rust — the matte black finish is the look, the corrosion resistance is the substance.
Specs
| Model | SyunsXoon 138-5316W3 (per retailer listings) |
| Length | 5-1/8 in. overall |
| Leaf width | 1 in. |
| Groove | 1/8 in. grooved centre (U indentation) |
| Material | Extruded aluminium |
| Finish | Matte black |
| Mounting | Non-mortise, screw-on |
| Pack size | 3 hinges — one door |
| Fit | Most screen and storm doors, incl. Larson, EMCO and Lanai enclosure doors (manufacturer) |
The good and the not-so-good
- Extruded aluminium: no rust, in exactly the wet environments these doors serve.
- The grooved-centre pattern matches the hinge profile a large share of enclosure doors were built with.
- Screwdriver-only fitting — no mortising, no special tools.
- Three hinges is one complete door, so the set is sized to the job.
Worth knowing before you buy
- Pattern-specific hardware. If your old hinge differs in length, leaf width or groove, this set won’t key in — measure before ordering.
- A 217-rating base from a small brand: the design is a standard pattern, the track record is still growing.
- Made for aluminium enclosure and storm doors — a wooden screen door on mortised hinges is a different repair.
Who they’re for — and who should skip them
Owners of aluminium patio enclosure, lanai and storm doors — Larson, EMCO and similar — whose doors sag, scrape or have a broken hinge, where the door and frame are otherwise sound. Enclosure doors are expensive; a hinge set that matches their pattern is the cheap save.
Skip them for wooden screen doors hung on ordinary butt hinges, and for any door whose existing hinge doesn’t share the grooved-centre shape. If your screen door’s problem is that it won’t close itself rather than that it hangs crooked, the spring hinge below is the relevant part instead.
Fitting them
- Measure the old hinge first — overall length, leaf width and the centre groove — and compare against the specs above.
- Support the door and remove one hinge at a time, keeping the other two in place so the door stays aligned.
- Screw the new hinge into the same positions; aluminium frames strip easily, so drive screws snugly, not brutally.
- Repeat for the remaining hinges, then check the swing and that the latch meets its strike cleanly.
Worth comparing
National Hardware N190-736 — when the screen door should also close itself
A different fix for a different complaint: a surface-mount spring hinge, 2-pack, that pulls a screen or light utility door shut on its own, rated 4.4 out of 5. If your hinges are sound but the door hangs open, read our National Hardware spring hinge review.
Questions people ask
Will these fit my Larson screen door?
The manufacturer lists Larson, EMCO and Lanai enclosure doors for this set. Confirm with your tape measure anyway: 5-1/8 inch overall length and a 1/8 inch centre groove are the two dimensions that decide it.
Will they rust by a pool?
They are extruded aluminium, which does not rust — that is precisely why enclosure doors use aluminium hinges.
How many hinges does a screen door need?
Three is the standard fit for an enclosure door, and this pack is one door’s worth.
The bottom line
Screen door repair is a matching exercise, not a shopping spree: match the groove, the length and the leaf, and a sagging enclosure door hangs true again for the price of a hinge set. When the pattern matches, this is the set.
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