TA3750 - 4.5" x 4.5" Heavy Weight Concealed Bearing Hinge Electric Strikes Pushed button unlocking: key outside

Pushed button unlocking: key outside or rotating inside lever retracts latch and releases button unlocking outside lever

Indoor or outdoor use

Bi-fold applications

phthalate-free threshold designed for transitions between carpet and vinyl composite tile

Provides the extra surface area needed to properly install mullion

TA3750 - 4.5" x 4.5" Heavy Weight Concealed Bearing Hinge Electric Strikes Pushed button unlocking: key outsideMcKinney TA3750 4 1 2 x 4 1 2 Full Mortise Heavy Weight 2 Knuckle Hinge, Concealed Bearing, Square Corner The TA3750 (steel) are our heavyweight two knuckle hinges, recommended for use on high frequency and or heavy wood or metal doors in schools, hospitals or other public buildings where heavy traffic is experienced. Features Commonly used for flush door frame wall application Heavy weight for use on all extra heavy and or high frequency doors Two