MM10EXIT Grille

Automatic opening when signaled by alarm or building fire system for quick exit


MM10EXIT is a code compliant Emergency Response Grille designed to help address both security and safety issues in public areas. MM10EXIT provides the security of a locked, rolling grille but immediately responds in an emergency situation to fully open automatically and allow safe escape. Available only from CITY GATES, the MM10EXIT is always on duty to provide separation control, yet still allows access to an alternate means of escape.

For applications where access-controlled egress is required. Its features include fail-safe emergency response opening capability and autolock mechanism as well as an emergency exit pushbutton opening device. Additionally, activation by the emergency exit push-button station can be configured to activate a local horn and strobe alarm.


Fail-safe emergency response capability. When an alarm is sounded, power is lost or if an emergency exit push-button station is activated, the MM10EXIT immediately clears the path by returning the grille to its full open position without requiring an electric or battery power source.

No manual locking or unlocking required. Autolock automatically secures a closed grille by engaging upon attempt of forced opening. Autolock remains disengaged during normal and emergency operation. 

No resetting is necessary to resume normal operation. Following an emergency situation, the MM10EXIT can be repositioned to the closed position by activating“close”at the motor control station.


Sizes: Openings from 5′ to 24′ wide and 4′ to 20′ high. Operation: Motor operator to provide daily operation along with fail-safe automatic emergency opening capabilities without the use of batteries or a back-up power source. Operator can be recessed above a ceiling, as no mechanical resetting is required to resume normal operation.

Autolock mechanism: Concealed self-locking assemblies pervent forced opening of a closed grille. Lock mechanism will not interfere with normal electric, fail-safe or emergency response self-opening feature.

Materials: Open curtain, which allows air circulation, is formed with a series of horizontal rods 5/16″ in diameter. Vertical separation between rods of 2″. Rods are available in aluminum – mill, clear or color anodized finish, 300 series stainless steel or solid galvanized steel. Bottom bar is aluminum tubular section, stainless steel optional. Heavy duty guides of extruded aluminum sections and trim cover. Hood are optional and usually omitted when curtain is recessed.

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