780-157HD ALUM 83"

Aluminum material
Clear finish
1/32" minimum recommended clearance between doors

1/4-20 x 1-1/4" Sexbolt (Screw + Post)
#12-24 X 11/16" Flat Head Self-Drill Screws

Up to 3 hour fire rated for metal, and 90 minute wood composite
Lifetime manufacturers warranty