LG OLED77M3YUA VESA pattern and wall-mount specs
The LG OLED77M3YUA — the 77-inch OLED evo M3 — uses a 300 x 300 mm VESA pattern and weighs 80.4 lb (36.5 kg) without its stand, according to LG's product page. Any wall mount whose range covers 300 x 300 and is rated for at least 80.4 lb will hold it.
Mount checklist for the OLED77M3YUA
- Pattern: 300 mm wide by 300 mm high (11.8 x 11.8 in). On a mount's box, both numbers must sit inside its range — "up to 400 x 400" fits this TV.
- Standard: a square Part F pattern in the VESA MIS standard, which uses M6 or M8 screws.
- Weight: 80.4 lb without the stand. Mounts are rated by maximum load; a mount rated 90 lb or more leaves no doubt, and full-motion arms should have more margin than fixed plates because the load sits further from the wall.
- Screws: use the screw length and any spacers the LG manual specifies. Too long can damage the panel; too short strips the insert.
- Wall: fix the mount to studs or masonry with the hardware the mount maker supplies for that wall type.
What that means when you shop
300 x 300 mm sits in the middle of the range most "medium to large" mounts cover — check that the mount's largest pattern is at least 300 wide and 300 tall, because some budget mounts stop at 300 x 300. At 80.4 lb it is a heavy set: plan a two-person lift, fix the mount into at least two studs or into masonry, and pick a mount whose rating leaves clear margin.
Closest in weight among other brands' 77-inch TVs: Sony BRAVIA XR A95L (77.6 lb, Not published); Samsung OLED S90H (71.4 lb, 400 x 300 mm); Sony BRAVIA 8 (71.2 lb, Not published). None of them shares this TV's pattern — a reminder that size and weight don't predict the holes.
Same mount, different model: LG's OLED77G3PUA (OLED evo G3) also uses 300 x 300 mm and weighs 81.1 lb. A mount that suits the OLED77M3YUA suits it too, which is handy if you are choosing between them.
Among LG's 48 models here, 7 use 300 x 300 mm (17%); LG's most common pattern is 300 x 200 mm. LG's page doesn't state the model year.
Other sizes in the LG OLED evo M3 line
LG's current US listing shows only the 77-inch size of the OLED evo M3, so there is no sibling to compare. Other LG TVs are on the LG page.
How it compares with other 77-inch TVs
There are 15 other 77-inch models on this site. 300 x 300 mm is the most common pattern at this size (4 of them). At 80.4 lb it is heavier than the 70.6 lb median for the size — heavier than 12 of them.
Across all sizes, 33 other TVs here use 300 x 300 mm, including models from Sony, TCL — for example Sony XR48A90K (48"), Sony K55S20M2 (55"), Sony K65S20M2 (65"), Sony K75S20M2 (75"). The 300 x 300 page lists them all.
Where to sit
A 77-inch 16:9 screen is 67.1 in wide and 37.8 in tall. It fills the SMPTE 30° view from 10 ft 5 in and THX's 40° cinema view from 7 ft 8 in. At this size 4K looks sharper than 1080p only from 10 ft or closer; beyond that, 20/20 eyes cannot tell the two apart. The 77-inch size page has the full table and every model at this size.
Pattern and weight: LG product page for OLED77M3YUA, checked 2026-10-20. Viewing distances: geometry from the angles cited on the methodology page. Not affiliated with LG.