Mul-T-Lock MT5+ Lever Grade 2 Lockset Yale Interior Dimensions: 10 1/4" (H)x Optional Backsets 1 3 Alarm Lock-ET-YIC/26D 5020 Knob Passage Set Core Option:KA - Sargent Fixed Core LA Keyway Keyed Alike Comes with 2 Change Keys per Lock.

Interior Dimensions: 10 1/4" (H)x 14 1/4"(W) x 11 1/2"(D)

Pick and drill resistant for high security needsMeets CEN & ISI standards

Internal Dimensions 37 1/5”H x 20 6/7”W x 18 1/9”D

(16) 1-1/2" Solid Steel Locking Bolts

Classroom Security Lock w/ Deadbolt and Auxiliary Latch Function: Latch bolt retracted by lever from either side unless outside lever is locked from inside or outside by key

Mul T Lock MT5+ Lever Grade 2 Lockset Yale Interior Dimensions: 10 1 4" (H)x Optional Backsets 1 3 Alarm Lock ET YIC 26D 5020 Knob Passage Set Core Option:KA Sargent Fixed Core LA Keyway Keyed Alike Comes with 2 Change Keys per Lock. Interior Dimensions: 10 1 4" (H)x 14 1 4"(W) x 11 1 2"(D) Pick and drill resistant for high security needsMeets CEN & ISI standards