What is the size of the opening that will be framed for EF-1 on the Wendy's restaurant roof?

The opening that will be framed for EF-1 on the Wendy's restaurant roof is sized at 2'6" x 2'6". This size is often determined by the requirements for accommodating specific equipment, in this case, likely a fan or exhaust system. When designing openings for rooftop equipment, it's essential to consider not only the dimensions of the equipment itself but also factors such as clearance, installation space, and maintenance access. The 2'6" x 2'6" opening is fitting for a unit that requires a standard installation space while allowing appropriate clearance for operation and servicing.

In contrast, the other options provide dimensions that either exceed or do not meet the necessary specifications established for EF-1, making them unsuitable for the intended purpose. Ensuring that the framing matches the precise dimensions is critical for the overall structural integrity and functionality of the installation on the roof.