TCL · 75" · A400U
TCL 75A400U VESA pattern and wall-mount specs
The TCL 75A400U — the 75-inch A400U — uses a 400 x 400 mm VESA pattern and weighs 54.2 lb (24.6 kg) without its stand, according to TCL's product page. Any wall mount whose range covers 400 x 400 and is rated for at least 54.2 lb will hold it.
- 1VESA pattern 400 x 400 mm
- 2Screen 65.4 x 36.8 in
- 3Weight, no stand 54.2 lb
- 475" · sit at 10 ft 2 in
Mount checklist for the 75A400U
- 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: 54.2 lb without the stand. Mounts are rated by maximum load; a mount rated 60 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 TCL 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.
Body size: 65.7 x 37.8 x 1.6 in
TCL lists the 75A400U at 65.7 in wide, 37.8 in tall and 1.6 in deep without its stand (167 x 96 cm), and 65.7 x 39.2 x 14.7 in on its stand — the stand adds 1.4 in of height and needs a surface 14.7 in deep. On the wall it stands out 1.6 in plus the mount's own profile. Compare it with every other 75-inch body on the above-a-fireplace and TV-cabinet pages.
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 54.2 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' 75-inch TVs: Samsung Micro RGB R85H (56 lb, 400 x 300 mm); Samsung Neo QLED QN80H (50.7 lb, 400 x 300 mm); LG QNED8MB Mini LED (48.7 lb, 300 x 300 mm). None of them shares this TV's pattern — a reminder that size and weight don't predict the holes.
TCL's other 75-inch models here — QM6K (300 x 300 mm, 50.7 lb), QM7K (300 x 300 mm, 54.2 lb), QM8K (400 x 400 mm, 62.6 lb), QM7L (300 x 300 mm, 54.2 lb) — use a mix of patterns, so check the exact model before buying a mount.
Among TCL's 46 models here, 5 use 400 x 400 mm (12%); TCL's most common pattern is 300 x 300 mm. TCL's page doesn't state the model year.
Other sizes in the TCL A400U line
TCL's current US listing shows only the 75-inch size of the A400U, so there is no sibling to compare. Other TCL TVs are on the TCL page.
How it compares with other 75-inch TVs
There are 36 other 75-inch models on this site. 400 x 400 mm is the most common pattern at this size (16 of them). At 54.2 lb it is lighter than the 66.1 lb median for the size — lighter than 25 of them.
Across all sizes, 26 other TVs here use 400 x 400 mm, including models from LG, Samsung, Sony — 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 75-inch 16:9 screen is 65.4 in wide and 36.8 in tall. It fills the SMPTE 30° view from 10 ft 2 in and THX's 40° cinema view from 7 ft 6 in. At this size 4K looks sharper than 1080p only from 9 ft 9 in or closer; beyond that, 20/20 eyes cannot tell the two apart. The 75-inch size page has the full table and every model at this size.
Pattern and weight: TCL A400U product page (75A400U), checked 2026-10-21. Viewing distances: geometry from the angles cited on the methodology page. Not affiliated with TCL.