I wish to install an attic ladder above my garage. There already is an access measuring 30" x 31". In addition, the attic has plywood installed over virtually the whole area.
I've looked at attic ladders on home improvement warehouse sites and they generally come in two configurations: 22.5 inches wide and 25 inches wide. The rafters (or trusses) are 16 inches on center from each other.
How do I determine which attic ladder width to purchase and how do I determine which way to orient the installation?
Thanks in advance.