Arch - Halls 4AB at Seattle Convention Center

Arch - Halls 4AB is 86.2 x 86.2 m (283 x 283 ft), 7,430 m² (79,980 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 86.2 m wall a Absen A2 Pro wall runs 137 x 2 (23016 x 336 px, 2,740 kg, 50.7 kW).

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 - Halls 4AB holds about 16,325 theater seats, 6,678 banquet seats at rounds of 10, or 4,591 classroom seats. Back row in theater is roughly 79.2 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
• 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
• Summit - Flex C78.4 x 78.4 m (257 x 257 ft) · 3.1 m ceiling

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