Picture of Finger Anatomy. Finger Anatomy: Fingers are easily injured, and broken fingers are some of the most common traumatic injuries seen in an emergency room. Finger fractures may account for up to 10% of all bone fractures.
Laminated veneer lumber (LVL) is an engineered wood product that uses multiple layers of thin wood assembled with adhesives. It is typically used for headers, beams, rim board, and edge-forming material. LVL offers several advantages over typical milled lumber: Made in a factory, LVL is produced under controlled specifications
There are dozens of manufacturers of LVL material, and they each have different load capacities. Without knowing what your 14' span is holding up, and what products are available locally, it's tough to say if how many 7 1/4 LVL's you'll need to stack up for your header.