10' and 12' Wide Assembly Benches feature a smooth single-piece top that spans the entire surface area—no center seam to to get in the way. Top is supported by three pairs of 14-ga. double braced legs with leveling glides for superior strength and rigidity. Legs adjust from 30–34"H. 15-ga., lower shelf and stringer help support and stabilize work surface. Choose from one of three tops. Virtually indestructible Butcher Block Maple top stands up to heavy wear and tear, will not harm sharp tools or delicate machine parts, and is laminated clear through and coated with a wear-resistant Varnique finish. Strong glass smooth Duratop II top features 3/8" thick 62-lb. density phenolic resincore top and bottom that are sealed with a catalyzed finish to resist convention liquids. 1" thick high-strength MDF core. For delicate precision jobs, choose the Plastic Laminate top with a 45-lb. density particleboard core and self-edged high-pressure plastic laminate on top with backer sheet on the bottom. Ships unassembled. Made in USA.