Model 255 - Power

Single Sliding U.L. Rated Fire Door – Power

Summary

Marathon's Single Sliding Stainless Steel Fire Door with power operation has a U.L. 10B, 90 minute fire rating.

Photos shown may include optional features.

Unitized high strength 1-3/4" thick 16 gauge stainless steel panel for easy cleaning. Stainless steel (20 gauge) edge capping for added strength and protection.
Corrosion-resistant, heavy-duty door hardware. Recessed stainless steel pull handles.
Top/bottom guidance system positively maintains door seal and position. Ensures fast, controlled operation with minimal gasket wear.
Adjustable top/bottom panel hardware for in-field adjustments. Maintains a positive and tight seal.
Full perimeter containment seal under positive/negative pressure.
Stainless steel shroud conceals rail (and operator on powered model)
U.L. 10B classification 90 minute rating.
Stainless steel fusible link.
Spring closure with adjustable closing speed to close door upon release of fusible link.

Power model also includes:

Electromechanical operator with NEMA 4X, U.L. 508A control panel.
Specially designed heavy-duty gearbox. Manual operation during unexpected power failures.
High strength Kevlar drive belt for quiet reliable operation.

Powered model has 1/4 h.p. electromechanical operator with NEMA 4X fiberglass control box.Open - 24”/sec. Close - 18”/sec.
(2) remote push plates.

Galvanized steel clad panel.
Flat shroud (requires 14” headroom).
Vision panel - wire mesh or clear fire lite (optional sizes).
Available in 20 or 45 minute fire ratings. (Larger vision panels available with these ratings.)

Push plates remote mounted.
Additional reversing photoeye mounted in side frame.
Touchless wall-mounted activation switch.
Actuators: Pull cord; photoeye;radio control; loop detector, motion detector; or O/C/S push-button.
Interlock system.
Battery back-up power supply.