be equipped with at least 1/2" insulation over bolt work, mounted on fusible studes, thermostatically controlled, designed to automatically seal opening at door frame when temperature reaches approximately 165° F. The door shall be equipped with five 3/4" diameter bolts, operating four to the front, and one to the top, with interlocking tongue and groove at top, front and rear, checked by threetumbler, hand changed, bronze case combination lock, with spindle shouldered against lock plate to prevent driving, and two hard pins in spindle to prevent drilling. Entire locking mechanism to be guarded by 1/4" drill-resisting plate. The door shall be equipped with "Emergency Escape Device’, having auxilliary inside handle, a turn of which will permit immediate escape of anyone locked in the vault. ec. Finish: The door shall be finished in wrinkle green, ornamented with gold striping. Jambs smooth green. Hinge tips, combination dial knob, rim and exposed portion of bolt handle, heavily nickel-plated. Numbers on combination dial in white against black enamel surface. Door shall be finished as specified above or shall have an equivalent factory finish. 9-10. STEEL PLATE DOOR: a. Where so indicated in the Administration Build- ing at Location "B", the vault door shall be steel plate hung in a steel frame with hinges and handle hasp in accordance with the details as indicated on the drawings. b. Frames, not otherwise detailed shall be construct ed of hot rolled steel shapes provided with a strap anchor welded to the back of angles. Corners shall be mitred, fitted close and welded. c. Where door contacts door stop provide mask felt ad. Door frame and hardware shall be provided as strip secured to door with brass machine screws. indicated in paragraph 9-06 e. of this specification. 9-11. ALUMINUM WINDOWS AND FRAMES: a. General: Contractor shall furnish and install fixed aluminum windows and frames where indicated on the drawings. b. Materials: as follows: Unless otherwise indicated shall be 9-4