The Mom’s Attic on a U-Haul 26-foot truck is about 2'7" long, 8'1" wide, and 3'3" high. U-Haul also lists the 26' truck’s main inside dimensions as 26'2" x 8'1" x 8'3".

Quick scoop

If you’re asking how much space the Mom’s Attic adds , it’s a small upper compartment, not a full extra room. It’s typically used for lighter boxes, bedding, and awkward small items rather than bulky furniture.

Dimensions

  • Mom’s Attic: 2'7" x 8'1" x 3'3" (L x W x H).
  • Main cargo area: 26'2" x 8'1" x 8'3" (L x W x H).

Practical use

  • Good for lightweight, fragile, or odd-shaped items.
  • Not ideal for heavy furniture because the attic area is smaller and elevated.

If you want, I can also estimate what fits in the 26' U-Haul overall for a one-bedroom, two-bedroom, or larger move.