TCL · 40" · Q3K
TCL 40Q3K VESA pattern and wall-mount specs
The TCL 40Q3K — the 40-inch Q3K — uses a 100 x 100 mm VESA pattern and weighs 10.1 lb (4.6 kg) without its stand, according to TCL's product page. Any wall mount whose range covers 100 x 100 and is rated for at least 10.1 lb will hold it.
- 1VESA pattern 100 x 100 mm
- 2Screen 34.9 x 19.6 in
- 3Weight, no stand 10.1 lb
- 440" · sit at 5 ft 5 in
Mount checklist for the 40Q3K
- Pattern: 100 mm wide by 100 mm high (3.9 x 3.9 in). On a mount's box, both numbers must sit inside its range — "up to 400 x 400" fits this TV.
- Standard: VESA MIS Part D, which uses M4 screws.
- Weight: 10.1 lb without the stand. Mounts are rated by maximum load; a mount rated 20 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: 35.1 x 20 x 3 in
TCL lists the 40Q3K at 35.1 in wide, 20 in tall and 3 in deep without its stand (89 x 51 cm), and 35.1 x 22 x 7.2 in on its stand — the stand adds 2 in of height and needs a surface 7.2 in deep. On the wall it stands out 3 in plus the mount's own profile. Other TVs' body sizes are on the will-it-fit pages.
What that means when you shop
A 100 x 100 mm pattern is at the small end for TVs: nearly every TV wall mount covers it, including compact fixed plates and single-stud swing arms, so the deciding number is weight, not holes. At 10.1 lb this is a light TV — one person can hold it while another hooks it on, and almost any mount for its pattern is rated well above it.
Closest in weight among other brands' 40-inch TVs: Vizio Quantum Full HD (10.58 lb, 200 x 200 mm). None of them shares this TV's pattern — a reminder that size and weight don't predict the holes.
Among TCL's 46 models here, 2 use 100 x 100 mm (5%); TCL's most common pattern is 300 x 300 mm. It is a 2025 model still listed by TCL.
Other sizes in the TCL Q3K line
Every size in this line that TCL lists uses 100 x 100 mm, so a mount for one fits the others if its weight rating covers the heaviest (10.1 lb on the 40").
| Model | Size | VESA (mm) | Weight |
|---|---|---|---|
| 32Q3K | 32" | 100 x 100 mm | 6.9 lb |
| 40Q3K | 40" | 100 x 100 mm | 10.1 lb |
How it compares with other 40-inch TVs
There are 1 other 40-inch models on this site. The most common pattern at this size is 200 x 200 mm (1 models); this TV's 100 x 100 mm is shared by 0 other 40-inch models. At 10.1 lb it is lighter than the 10.6 lb median for the size — lighter than 1 of them.
Across all sizes, 5 other TVs here use 100 x 100 mm, including models from LG, Vizio — for example LG 32LB650BPUA (32"), LG 27LB7000PUA (27"), Vizio VHQ24M-1007 (24"), Vizio VHQ32M-1007 (32"). The 100 x 100 page lists them all.
Where to sit
A 40-inch 16:9 screen is 34.9 in wide and 19.6 in tall. It fills the SMPTE 30° view from 5 ft 5 in and THX's 40° cinema view from 4 ft. At this size 4K looks sharper than 1080p only from 5 ft 2 in or closer; beyond that, 20/20 eyes cannot tell the two apart. The 40-inch size page has the full table and every model at this size.
Pattern and weight: TCL Q3K product page (40Q3K), checked 2026-10-21; 2025 model. Viewing distances: geometry from the angles cited on the methodology page. Not affiliated with TCL.