Portland Ballroom 258 at Oregon Convention Center

Portland Ballroom 258 is 26.8 x 14.6 m (88 x 48 ft), 391 m² (4,212 sq ft), with a 8.5 m (28 ft) ceiling.

Plan view

LED wall that fits

Under a 8.5 m ceiling with 1.5 m trim and 0.3 m clearance you get 13 rows of 500 mm tile flown. Along the 26.8 m wall a Absen PL2.5 Plus V2 wall runs 42 x 13 (8400 x 2600 px, 4,259 kg, 87.4 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, Portland Ballroom 258 holds about 682 theater seats, 279 banquet seats at rounds of 10, or 192 classroom seats. Back row in theater is roughly 19.8 m from the downstage edge; the previz checks whether the bottom of the wall clears the heads in front.

Other rooms at Oregon Convention Center

• Exhibit Hall A-A1-B-C-D-E153.9 x 153.9 m (505 x 505 ft) · 9.1 m ceiling
• Exhibit Hall A1-B-C-D-E144.6 x 144.6 m (474 x 474 ft) · 9.1 m ceiling
• Exhibit Hall A-A1-B-C-D143.6 x 143.6 m (471 x 471 ft) · 9.1 m ceiling
• Exhibit Hall A1-B-C-D134.6 x 134.6 m (442 x 442 ft) · 9.1 m ceiling
• Exhibit Hall B-C-D-E134.6 x 134.6 m (442 x 442 ft) · 9.1 m ceiling
• Exhibit Hall B-C-D122.7 x 122.7 m (403 x 403 ft) · 9.1 m ceiling
• Exhibit Hall C-D-E122.7 x 122.7 m (403 x 403 ft) · 9.1 m ceiling
• Exhibit Hall A-A1-B-C120 x 120 m (394 x 394 ft) · 9.1 m ceiling
• Exhibit Hall C-D109.9 x 109.9 m (361 x 361 ft) · 9.1 m ceiling
• Exhibit Hall A1-B-C107.3 x 107.3 m (352 x 352 ft) · 9.1 m ceiling
• Exhibit Hall A-A1-B103.6 x 103.6 m (340 x 340 ft) · 9.1 m ceiling
• Exhibit Hall B-C93 x 93 m (305 x 305 ft) · 9.1 m ceiling

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