Elmdor Access Panel SLK 14" x 14" Shur-Lok Access Rough Opening Size=14 &frac12;" wide x 14 &frac12;" high";" Material: 14 gauge galvanneal steel, with 16 gauge vertical reinforcement channel, Finish: Prime coat suitable for painting Lock / latch: Automatic Springbolt type lock & key Hinge: Concealed Flange: &frac78;" flange