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LG XS4P · window-facing displays

LG High Brightness Display: XS4P 4,000-Nit Window Screens, Priced

LG's XS4P is a window-facing display rated 4,000 nits at every size, the brightest panel family we list. Three sizes are on the store, from $2,795, with LG's full specs for each below.

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Prices as of October 25, 2026. Call (201) 834-6412 to check stock on 3+ units.

LG 55XS4P-B high brightness window display, front view
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LG XS4P sizes and prices

ModelSizeResolutionNitsDutyWhere it goesPriceBuy
LG 49XS4P-B49"Full HD4,00024/7Behind window glass$2,795Buy
LG 55XS4P-B55"Full HD4,00024/7Behind window glass$3,295Buy
LG 75XS4P-B75"4K UHD4,00024/7Behind window glass$8,495Buy

Prices as of October 25, 2026, live from displaydetails.com.

What sets the XS4P apart

4,000 nits across the range. Samsung's OM55B, its most popular window size, is 3,000. If a window takes afternoon sun with no awning, that extra 1,000 nits is what keeps the picture from going gray.

One VESA pattern. The 49, 55 and 75 all use 600 × 400. On a chain rollout where window bays differ store to store, one mount family covers every size.

Two DisplayPort inputs plus two HDMI, and built-in speakers on LG's data. Most window screens never need sound, but it's there.

What to watch

Depth. The 49XS4P-B is 83.5 mm deep and the 75XS4P-B 104 mm, against 54.5 mm for a Samsung OM55B. Measure the window bed before you order.

Resolution. The 49 and 55 are Full HD. From the sidewalk, 6 feet back or more, that's rarely visible. Up close at a mall-style storefront, 4K is sharper.

Power. LG lists the 75XS4P-B at 750 W typical, 790 W max. Two of them on one window circuit is a question for your electrician, not an afterthought.

The 55XS4P-B is $3,295 and the 49XS4P-B $2,795, a $500 step for 6 more inches.

LG XS4P specs, model by model

Spec figures come from LG's product data via the Open Icecat catalog, checked 2026-10-23. Rows LG doesn't publish are left out.

LG 49XS4P-B 49-inch high brightness display

LG 49XS4P-B: 49" Full HD, 4,000 nits

LG's window-facing 49. Full HD, 4,000 nits.

$2,795

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Price as of October 25, 2026.

Model / part number49XS4P-B / 49XS4P-B
Screen size49" diagonal
Resolution1920 x 1080 (Full HD)
Brightness4,000 nits (cd/m²)
Operating hours24/7
Panel typeIPS
Contrast ratio1300:1
Haze (anti-glare)3%
Response time8 ms
Inputs and control2 × HDMI, 2 × DisplayPort, 1 × USB, RJ45 LAN
Built-in player / OSLG webOS SoC player
Typical power345 W
Max power375 W
Operating temperature0 - 40 °C (32 - 104 °F)
VESA mount600 x 400 mm
Width × height × depth43" × 24.7" × 3.3" (1092.7 × 626.4 × 83.5 mm)
Weight45.9 lb (20.8 kg)
Boxed weightabout 55.8 lb (25.3 kg)
LG 55XS4P-B 55-inch high brightness display

LG 55XS4P-B: 55" Full HD, 4,000 nits

LG's window-facing 55. Full HD, 4,000 nits.

$3,295

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Price as of October 25, 2026.

Model / part number55XS4P-B / 55XS4P-B
Screen size55" diagonal
Resolution1920 x 1080 (Full HD)
Brightness4,000 nits (cd/m²)
Operating hours24/7
Panel typeIPS
Contrast ratio1000:1
Haze (anti-glare)3%
Response time9 ms
Inputs and control2 × HDMI, 2 × DisplayPort, 1 × USB, RJ45 LAN
Built-in player / OSLG webOS SoC player
Typical power375 W
Max power400 W
Operating temperature0 - 40 °C (32 - 104 °F)
VESA mount600 x 400 mm
Width × height × depth48.6" × 27.9" × 3.4" (1235.5 × 709.4 × 85.4 mm)
Weight57.3 lb (26 kg)
Boxed weightabout 68.8 lb (31.2 kg)
LG 75XS4P-B 75-inch high brightness display

LG 75XS4P-B: 75" 4K UHD, 4,000 nits

LG's window-facing 75. 4K, 4,000 nits.

$8,495

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Price as of October 25, 2026.

Model / part number75XS4P-B / 75XS4P-B
Screen size75" diagonal
Resolution3840 x 2160 (4K UHD)
Brightness4,000 nits (cd/m²)
Operating hours24/7
Panel typeIPS
Contrast ratio1200:1
Haze (anti-glare)3%
Response time8 ms
Inputs and control2 × HDMI, 2 × DisplayPort, 1 × USB, RJ45 LAN
Built-in player / OSLG webOS SoC player
Typical power750 W
Max power790 W
Operating temperature0 - 40 °C (32 - 104 °F)
VESA mount600 x 400 mm
Width × height × depth66.1" × 37.7" × 4.1" (1679.2 × 957.6 × 104 mm)
Weight87.3 lb (39.6 kg)
Boxed weightabout 110.2 lb (50 kg)

Is 4,000 nits overkill?

Sometimes. A north-facing window, or one under a deep awning, does fine at 3,000 nits, and at 55 inches the Samsung OM55B is $2,750 against $3,295 for the 55XS4P-B. Our nits guide by window direction lays out where we'd draw the line. When in doubt on a south or west face, buy the brighter panel: you can turn a screen down, you can't turn it up past its rating.

LG XS4P questions

How bright is the LG XS4P?

All three LG XS4P sizes, the 49, 55 and 75-inch, are rated 4,000 nits on LG's data, which is the top of what we sell for windows and enough for south- and west-facing glass in direct sun, about eight times a 500-nit indoor signage screen. Dim it after sunset so it doesn't glare at the street.

Is the LG 55XS4P-B 4K?

No. LG lists the 49XS4P-B and 55XS4P-B at 1920 × 1080 (Full HD). Only the 75XS4P-B is 3840 × 2160. If you want 4K at 55 inches, the Samsung OM55B is 4K at 3,000 nits.

Can the LG XS4P run 24/7?

Yes. LG rates all three sizes for 24/7 operation with an operating range of 0 to 40 °C (32 to 104 °F).

What VESA pattern does the LG XS4P use?

600 × 400 mm on all three sizes. That helps on a rollout with mixed window sizes, since one mount family covers the 49, 55 and 75. Mounts and floor stands are quoted per window.

Does the XS4P need a separate media player?

No. It runs LG webOS, which plays content on its own and works with LG's own and third-party signage software. If the rest of your screens are Samsung, stick with Samsung OM so one system runs everything.

LG XS4P or Samsung OM: which should I buy?

Pick by brightness and resolution. XS4P is 4,000 nits at every size; the Samsung OM55B is 3,000 nits but 4K. At 55 inches the OM55B is $2,750 and the 55XS4P-B $3,295. See the Samsung OM page for the side-by-side.

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