LG 27UP850-W VESA Mount Size & Fit
Quick answer
The LG 27UP850-W uses a 100×100 mm VESA pattern (M4 screws). Screw spec: M4 metric thread. The 27UP850-W weighs 9 lb (4.1 kg) without the stand, so any arm, stand or bracket rated for 100×100 mm and at least 9 lb will hold it. Verified against the LG documentation — see source below.
27UP850-W mounting specs
| VESA pattern | 100×100 mm (3.9×3.9 in) |
|---|---|
| Screw thread | M4 |
| Screw length | M4 metric thread; length depends on the arm plate — see the manual |
| Weight without stand | 9 lb (4.1 kg) |
| Screen size | 27 in |
| Model year | 2021 |
| Series | UltraFine (UP850) |
| Source | Manufacturer documentation |
M4 per FDMI MIS-D; spec page does not print the thread. 'VESA DisplayHDR 400' in LG's marketing name refers to the HDR cert, not the mount. Later replaced at retail by the near-identical 27UP850N-W (not verified here). Manufacturer publishes the stand-free weight in kg; lb converted.
Among the 23 verified 27-inch monitors here, the 27UP850-W is #6 lightest of 23 at 9 lb — the range runs 7.7 to 12.6 lb.
Arm, stand or wall bracket for the 27UP850-W
All three use the same 100×100 mm holes. A desk-clamp arm frees the footprint and adjusts in every axis; a freestanding VESA base replaces a wobbly factory stand; a wall bracket clears the desk but fixes the height. Whatever you pick, the rating must cover 9 lb — the full decision guide is VESA monitor mounts.
Wall mounts that fit the 27UP850-W
From our mount database: pattern covers 100×100 mm, the rating clears the 27UP850-W's 9 lb with a 20% margin, and 27-inch screens are in range.
WALI 1330LM Articulating 13-42
Small-TV arm for kitchens and offices; folds to 2.6 in from the wall.
Supports VESA 75×75 up to 200×200 mm and 44 lb — clears the 27UP850-W's 100×100 mm / 9 lb.
Wall: single stud OK
PERLESMITH PSTK1 Tilting
Compact tilting bracket for small rooms and single-stud walls.
Supports VESA 75×75 up to 400×400 mm and 115 lb — clears the 27UP850-W's 100×100 mm / 9 lb.
Wall: single stud OK
PERLESMITH PSMFK1 Fixed
Slim fixed mount with quick-release tabs for easy cable access.
Supports VESA 75×75 up to 400×400 mm and 88 lb — clears the 27UP850-W's 100×100 mm / 9 lb.
Wall: single stud OK
Double-check before buying
- Pop off any plastic caps and confirm 4 threaded holes at 100 mm across and 100 mm vertically, center-to-center.
- Check the M4 bolts seat by hand before torquing — thin monitor housings punish over-long screws.
- Compare the model code on the rear label with this page (27UP850-W) — same-series panels can differ.
Frequently asked questions
What VESA pattern does the LG 27UP850-W use?
The LG 27UP850-W uses a 100×100 mm VESA pattern — 100 mm between hole centers horizontally and 100 mm vertically. Any monitor arm, stand or wall bracket listing 100×100 mm fits directly. Confirm on the back of your unit, since some retail variants of a series differ.
What screws does the 27UP850-W need for an arm or mount?
The 27UP850-W takes M4 metric screws. Documented spec: M4 metric thread; length depends on the arm plate — see the manual. Most arms ship M4 hardware in two lengths — hand-test the shorter one first; a bolt that bottoms out can damage the housing.
How much does the 27UP850-W weigh without the stand?
The 27UP850-W weighs 9 lb (4.1 kg) without the stand. Typical desk arms list roughly 9–20 lb per screen, so check your arm's exact rating — and its supported screen-size range — against these numbers before buying.
Will a standard monitor arm hold the 27UP850-W?
Any arm that lists the 100×100 mm pattern, carries at least 9 lb and covers 27-inch screens will hold it. The desk matters too: clamps need a solid edge; glass desks call for a grommet mount or freestanding base.
Can the 27UP850-W be wall-mounted?
Yes — the same 100×100 mm holes work on wall brackets. 3 wall mount(s) in our database clear the 27UP850-W's 9 lb and 27-inch size with a 20% margin; small fixed or articulating brackets sold for compact TVs are the usual pick.