The Optional Extension bar ,EXT-8, works with the 84 Two Tier Dolly to accommodate  taller chairs (National Public Seating models 1000, 1100, 3200, 602) Note: the chair cart with the extension bar raises the height of the unit to 80" without chairs or 88" with chairs. This means it will no longer fit through a standard doorway

• Storage Capacity with Extension, EXT-8: 72 chairs - NPS models 1000, 1100
• Storage Capacity with Extension, EXT-8: 60 chairs - NPS models 602, 3200
• Will not fit though a standard 80" doorway fully load.
• Dark Brown Powder-Coated Steel

NPS is America’s manufacturer of the largest line of institutional quality folding chairs and tables, stack chairs, stools and dollies as well as a line of conference and training room tables with chairs to match. NPS was incorporated in NJ in 1998 to fill a need in the educational, religious, hospitality, government, commercial and other institutional markets, for furniture produced of only the highest quality grade materials and craftsmanship, with great availability at fair prices. NPS products are covered by a ten-year warranty & are currently in use in tens of thousands of facilities nationwide.

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• Length: 62 1/2"