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Even when the sex bolt is installed in the lowest area of the top rail, thetop edge of the strike will protrude above the rail. To solve this problem, Securitron offers the offset strike. The holes in the strike plate are offset 1/4" (6.4mm) from the center of the strikeand this allows successful mounting on a narrow top rail. An approximate 10% loss of holdingforce results from the skewed position of the strike mounting screw but this is not significant onaluminum frame glass doors which are not high security barriers. The offset strike is supplied at no additional charge if it's called out with the order or may be sent as a replacement for the standard strike. This problem does not occur with the more narrow model 32 or 34 so no offsetstrike is offered with them. 2.5.2. THE UMB-BRACKET FOR ALUMINUM AND CONCRETE FILLED HEADERS The UMB-34 bracket replaces the functions of the ASB bracket (see previous drawing) and theCWB bracket (see Section 2.5.5) which permits mounting on wood or concrete filled steel headers. The UMB has the unique benefit of being reversible which alters the projection of thebracket with respect to the top of the magnet body and allows coping with different stop thicknesses. The bracket is delivered with a selection of fasteners for different applications. Wood screws are present for mounting on wood headers; cap screws are present for installation into blind nuts and sheet metal screws are present for optional mounting on steelheaders. Rev. A.3, 5/00 Page- 8 FIG. 8: USE OF THE UMB BRACKET WITH THE MODEL 34 MAGNALOCK NOTE HOW BRACKET CAN BE REVERSED TO COPE WITH DIFFERENT STOP THICKNESSES BLADE HEADER STOP HEADER STOP DOOR STRIKE MAGNET UMB BRACKET ALUMINUM DOOR AND FRAME WITH BLADE STOP DOOR STRIKE MAGNET UMB BRACKET ALUMINUM DOOR AND FRAME WITH BLADE STOP THE TWO LARGER HOLES ARE FOR THE CABLE EXIT. THE TWO THREADED HOLES ACCEPT THE MAGNET MOUNTING SCREWS. THE REMAINING FIVE HOLES ACCEPT DIFFERENT FASTENER TYPES TO MOUNT TO DIFFERENT HEADERS. 2.5.3 SOLID GLASS DOOR MOUNTING The Magnalock is an excellent choice for securing 100% glass doors with no aluminum rail. The magnet is suspended in normal fashion from the header and the difficulty in the installation is mounting the strike plate on the glass door as glass cannot be drilled. This is accomplished by using Securitron's model GDB (or GDBM with metric fasteners) Glass Door Bracket and model AKG Adhesive Kit for Glass (see Figure 7). The GDB bracket will work with either the model 32, model 62, or model 82 Magnalock (but not with the model 34). The bracket is affixed to the glass surface by a special adhesive and the strike screws into thebracket conventionally. The adhesive provides a permanent bond stronger than the holding force of the Magnalock. Note that we have said "100% glass door". Some doors that appear to be glass are actually laminated with plastic. If the Magnalock with glass door bracket is used on this type ofdoor, it is possible that failure will occur via delamination. In some cases the header of a glass door is vertical glass. The magnet can be mounted onsuch a header by using a 3" X 3" aluminum angle bracket (part number HEB-3G). The bracket is glued to the vertical glass header with Securitron's adhesive kit for glass and the magnet is screwed to the bracket. Rev. A.3, 5/00 Page- 9 FIG. 9: STRIKE INSTALLATION ON 100% GLASS DOOR GLASSDOOR GLASSDOORBRACKET STRIKE 1/4" X 3/4" ROLL PINS ADHESIVE BOND 2 X RUBBER WASHERS FLATHEAD SCREW WHITE PLASTIC BUSHING 5/16-18 x 1" (US) OR 8MM -1.25MM X 25MM (METRIC) NOTE: OMIT ROLL PIN WHITE PLASTIC BUSHINGS 2.5.4 DOUBLE DOOR MOUNTING Several possibilities exist for this application. In some cases, one of the door leaves is pinnedso that only one leaf is used and this is secured by a single Magnalock. If both leaves are to be active, two Magnalocks can be used. For the most attractive installation, they should bebutted together but if obstructions exist in the header that interfere with mounting, the magnetscan be separated somewhat. Another possibility is to use Securitron's split strike which is available for the model 62 and model 82 (use of a split strike with the model 32 or 34 serieswould provide inadequate security) In this method, a single Magnalock is mounted in thecenter of the header and a half size strike is mounted on each leaf. This reduces the holdingforce to about 550 lbs. (250 KG) for each leaf with the model 62 and about 850 lbs. (385 KG) for each leaf with the model 82. The split strike (part number ASS-62 or ASS-82 with “M” suffix for metric) is available either as part of a complete Magnalock or supplied separately as areplacement for the standard strike. Read section 2.7 for information on Dress Covers which improve the appearance of a double door installation. Certain electronic considerations also apply when Magnalocks are used on double doors. See section 3.5.4. 2.5.5 STEEL HEADER FILLED WITH CONCRETE OR WOOD FRAME MOUNTING Securitron offers a combined bra...

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