TVs / Samsung / The Terrace LST9D (Full Sun)
Samsung QN65LST9DAFXZA VESA pattern and wall-mount specs
The Samsung QN65LST9DAFXZA — the 65-inch The Terrace LST9D (Full Sun) — uses a 400 x 400 mm VESA pattern and weighs 85.8 lb (38.9 kg) without its stand, according to Samsung's product page. Any wall mount whose range covers 400 x 400 and is rated for at least 85.8 lb will hold it.
Mount checklist for the QN65LST9DAFXZA
- Pattern: 400 mm wide by 400 mm high (15.7 x 15.7 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: 85.8 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 Samsung 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
400 x 400 mm sits in the middle of the range most "medium to large" mounts cover — check that the mount's largest pattern is at least 400 wide and 400 tall, because some budget mounts stop at 300 x 300. At 85.8 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' 65-inch TVs: LG Gallery TV LX7 Mini LED (59.3 lb, 400 x 400 mm); Sony BRAVIA 7 II (58.6 lb, 300 x 300 mm); Sony BRAVIA 9 II (58.6 lb, 300 x 300 mm). 1 of them shares this TV's pattern.
Same mount, different model: Samsung's QN65LST7DAFXZA (The Terrace LST7D (Partial Sun)) also uses 400 x 400 mm and weighs 85.8 lb. A mount that suits the QN65LST9DAFXZA suits it too, which is handy if you are choosing between them.
Among Samsung's 78 models here, 12 use 400 x 400 mm (15%); Samsung's most common pattern is 400 x 300 mm. Samsung's page doesn't state the model year.
Other sizes in the Samsung The Terrace LST9D (Full Sun) line
Every size in this line that Samsung lists uses 400 x 400 mm, so a mount for one fits the others if its weight rating covers the heaviest (106 lb on the 75").
| Model | Size | VESA (mm) | Weight |
|---|---|---|---|
| QN65LST9DAFXZA | 65" | 400 x 400 mm | 85.8 lb |
| QN75LST9DAFXZA | 75" | 400 x 400 mm | 106 lb |
How it compares with other 65-inch TVs
There are 39 other 65-inch models on this site. The most common pattern at this size is 300 x 300 mm (13 models); this TV's 400 x 400 mm is shared by 2 other 65-inch models. At 85.8 lb it is heavier than the 47 lb median for the size — heavier than 37 of them.
Across all sizes, 22 other TVs here use 400 x 400 mm, including models from LG, Sony, TCL — for example LG 75UT7590PUA (75"), LG 65LX7BPUA (65"), LG 75QNED80URA (75"), LG 75UT7000PUA (75"). The 400 x 400 page lists them all.
Where to sit
A 65-inch 16:9 screen is 56.7 in wide and 31.9 in tall. It fills the SMPTE 30° view from 8 ft 10 in and THX's 40° cinema view from 6 ft 6 in. At this size 4K looks sharper than 1080p only from 8 ft 5 in or closer; beyond that, 20/20 eyes cannot tell the two apart. The 65-inch size page has the full table and every model at this size.
Pattern and weight: Samsung product page for QN65LST9DAFXZA, checked 2026-10-20. Viewing distances: geometry from the angles cited on the methodology page. Not affiliated with Samsung.