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Arch - Hall 4C at Seattle Convention Center

Published dimensions

Arch - Hall 4C is 43.1 x 43.1 m (141 x 141 ft), 1,858 m² (19,995 sq ft), with a 3.1 m (10 ft) ceiling.

Plan view

Shape approximate: the venue publishes area only, so this room is drawn as a square of equal area.

LED wall that fits

Under a 3.1 m ceiling with 1.5 m trim and 0.3 m clearance you get 2 rows of 500 mm tile flown, which is tight; ground-stack or go lower on trim. Along the 43.1 m wall a Absen A2 Pro wall runs 68 x 2 (11424 x 336 px, 1,360 kg, 25.2 kW).

Panel	Pitch	Wall (cols x rows)	Size	Resolution	Weight	Power (max)
9thPanel DW1.9 S Pro	1.875 mm	57 x 3 = 171	34.2 x 1 m	18240 x 540	821 kg / 1,810 lb	43.4 kW, 209 A @ 208 V
Absen A2 Pro	2.97 mm	68 x 2 = 136	34 x 1 m	11424 x 336	1,360 kg / 2,998 lb	25.2 kW, 121 A @ 208 V
Absen A3 Pro	3.9 mm	68 x 2 = 136	34 x 1 m	8704 x 256	1,292 kg / 2,848 lb	21.8 kW, 105 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, Arch - Hall 4C holds about 3,941 theater seats, 1,612 banquet seats at rounds of 10, or 1,108 classroom seats. Back row in theater is roughly 36.1 m from the downstage edge; the previz checks whether the bottom of the wall clears the heads in front.

Other rooms at Seattle Convention Center

Arch - Halls 4ABCDEF138.2 x 138.2 m (453 x 453 ft) · 3.1 m ceiling
Arch - Halls 4BCDEF124.1 x 124.1 m (407 x 407 ft) · 3.1 m ceiling
Summit - Exhibit Hall113.5 x 113.5 m (372 x 372 ft) · 3.1 m ceiling
Arch - Halls 4CDEF108.1 x 108.1 m (355 x 355 ft) · 3.1 m ceiling
Arch - Halls 4DEF99.1 x 99.1 m (325 x 325 ft) · 3.1 m ceiling
Arch - Halls 4ABC96.4 x 96.4 m (316 x 316 ft) · 3.1 m ceiling
Summit - Flex96 x 96 m (315 x 315 ft) · 3.1 m ceiling
Arch - Halls 4EF93.8 x 93.8 m (308 x 308 ft) · 3.1 m ceiling
Summit - Exhibit Hall 2 + Swing93.2 x 93.2 m (306 x 306 ft) · 3.1 m ceiling
Arch - Halls 4AB86.2 x 86.2 m (283 x 283 ft) · 3.1 m ceiling
Summit - Exhibit Hall 284.7 x 84.7 m (278 x 278 ft) · 3.1 m ceiling
Summit - Flex BC84.6 x 84.6 m (278 x 278 ft) · 3.1 m ceiling

Published dimensions (source), fetched 2026-09-04. All rooms at Seattle Convention Center · Venues in Seattle