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Grand Horizon A/B/C at Marriott Marquis Chicago

Published dimensions

Grand Horizon A/B/C is 51.2 x 19.2 m (168 x 63 ft), 983 m² (10,581 sq ft), with a 8.8 m (29 ft) ceiling.

Plan view

LED wall that fits

Under a 8.8 m ceiling with 1.5 m trim and 0.3 m clearance you get 14 rows of 500 mm tile flown. Along the 51.2 m wall a Absen A2 Pro wall runs 81 x 14 (13608 x 2352 px, 11,340 kg, 209.8 kW).

Panel	Pitch	Wall (cols x rows)	Size	Resolution	Weight	Power (max)
9thPanel DW1.9 S Pro	1.875 mm	68 x 20 = 1360	40.8 x 6.8 m	21760 x 3600	6,528 kg / 14,392 lb	345.4 kW, 1661 A @ 208 V
Absen A2 Pro	2.97 mm	81 x 14 = 1134	40.5 x 7 m	13608 x 2352	11,340 kg / 25,000 lb	209.8 kW, 1009 A @ 208 V
Absen A3 Pro	3.9 mm	81 x 14 = 1134	40.5 x 7 m	10368 x 1792	10,773 kg / 23,750 lb	181.4 kW, 872 A @ 208 V

Wall sizing assumes 1.5 m trim to the bottom edge, 0.3 m clearance under the ceiling, and a wall no wider than 80% of the longest wall. Weight and power are tile totals from the panel spec sheet; add processing, rigging, and cable.

Seating estimate

After a 12 x 7 m stage, Grand Horizon A/B/C holds about 1,997 theater seats, 817 banquet seats at rounds of 10, or 561 classroom seats. Back row in theater is roughly 44.2 m from the downstage edge; the previz checks whether the bottom of the wall clears the heads in front.

Other rooms at Marriott Marquis Chicago

Skyline Ballroom at McCormick Place W37563.7 x 146.6 m (209 x 481 ft) · 12.2 m ceiling
Skyline Ballroom at McCormick Place W375CDE63.4 x 96.9 m (208 x 318 ft) · 12.2 m ceiling
Skyline Ballroom at McCormick Place W375ABC63.4 x 76.8 m (208 x 252 ft) · 12.2 m ceiling
Skyline Ballroom at McCormick Place W375DE60 x 69.5 m (197 x 228 ft) · 12.2 m ceiling
Skyline Ballroom at McCormick Place W375BC63.4 x 54.9 m (208 x 180 ft) · 12.2 m ceiling
Skyline Ballroom at McCormick Place W375CD63.4 x 54.9 m (208 x 180 ft) · 12.2 m ceiling
Skyline Ballroom at McCormick Place W375AB63.4 x 49.4 m (208 x 162 ft) · 12.2 m ceiling
Skyline Ballroom at McCormick Place W375E60 x 42.4 m (197 x 139 ft) · 12.2 m ceiling
Skyline Ballroom at McCormick Place W375C27.4 x 88.4 m (90 x 290 ft) · 12.2 m ceiling
Grand Horizon Ballroom51.2 x 45.4 m (168 x 149 ft) · 8.8 m ceiling
Great Lakes Ballroom51.2 x 45.4 m (168 x 149 ft) · 7.3 m ceiling
Skyline Ballroom at McCormick Place W375D27.4 x 63.7 m (90 x 209 ft) · 12.2 m ceiling

Published dimensions (source), fetched 2026-09-04. All rooms at Marriott Marquis Chicago · Venues in Chicago