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. . <br /> MFIAL+1I® <br /> . <br /> MODEL: MRCD BUTTERFLY <br /> 11 ROUND CEILING RADIATION DAMPER <br /> FIRE AND CEILING RADIAN r r4PERS <br /> MODEL MRCD: UL 555C Listed for 3-4 hours(ULC-S112.2) <br /> Round,butterfly-type. <br /> I.SSIP, UL CLASSIFIED <br /> CO (SEE COMPLETE STANDARD CONSTRUCTION: <br /> C US MARKING ON PRODUCT) Frame: 22 Ga. galvanized steel. <br /> Blades: 22 Ga. galvanized steel. <br /> s•-.0_,71:" Thermal Blanket: Non-asbestos, ceramic blanket <br /> on sizes 80 sq. inches and up <br /> 0 Spring: Corrosion resistant steel spring. <br /> , .. <br /> .,, Finish: Mill Galvanized. <br /> 1 .Xv . <br /> OPTIONS: <br /> FUSIBLE LINK Frame Height: 2.5"or 3.5" <br /> ---iw <br /> ZOO <br /> * 7 <br /> ,..4410* <br /> 40t 1 <br /> OR Adjustable Volume Control <br /> Fusible Link: <br /> Outlet Transition: Round to Square. <br /> Thermal Blanket: Replaceable 165°F or 212°F. <br /> TB5000, 24"x 24"x 1/8" <br /> non-asbestos,ceramic blanket. <br /> 3 SOO(89mmI <br /> SIZE LIMITATIONS: <br /> ° Minimum 3.875"die., Maximum 18"dia. <br /> N.... / MINIMUM 31175" <br /> /011 14 MAXIMUM 18' <br /> ilir . . 2-5°CrO(R6amm) <br /> 111111111 3000"itsfernm) <br /> i <br /> Illiiitgr 0,626"(16mm) <br /> 11111111111111111111 .,--'-' i <br /> A im.imi.IN 1 N.r h o wir <br /> 1111111111111h0.1110 <br /> \\—FUSIBLE LINK r <br /> i <br /> TRANSMON PLATE 20 GA.GAIN.STEEL—' <br /> MAXIMUM DIFFUSER NECK:21"X 21" <br /> MODEL MRCD WITH ADJUSTABLE VOLUME CONTROL MODEL MRCD WITH ROUND TO SQUARE TRANSITION <br /> SUGGESTED SPECIFICATION <br /> Round ceiling damper's shall be Model MRCD by Metal-Fab. Ceiling dampers shall bear the Underwriters'Laboratories <br /> label and be rated for both steel duct and flex duct installations. No external damper supports shall be required for ceiling <br /> dampers up to and including 18"diameter.Ceiling damper insulation shall be of the non-asbestos type.Ceiling dampers <br /> shall be furnished with a fusible link. <br /> Project: Contractor: <br /> Location: Address: <br /> Architect: P.O. Number: <br /> Engineer: Date: <br /> L/thoin U SA 102011 Mai-Fab,In. Fon')No,11751-11/11 <br /> , 8881 <br />