Regency® E18E Gas Fireplace Insert | 4141|installation5 1/4"133mm8 3/16"208mm2 1/8"54mmCFiresong 220N Firebox E18 InsertDETAIL CSCALE 1 : 4Leg height settingDE18 InsertFiresong 220N FireboxVents on center1 15/16"49mmFiresong 220N Installation SpecificationsLeg Setting / Outer Shell PositionFlex Adaptor Length5 - 3/16"[132mm]5 1/4"133mm8 3/16"208mm2 1/8"54mmCDETAIL CSCALE 1 : 4Leg height settingDE18 InsertFiresong 220N FireboxVents on centerDETAIL DSCALE 1 : 4Adaptor PlateFastener Setting1 15/16"49mmLeg Setting / Outer Shell PositionFlex Adaptor LengthCollar Plate Setting / Vent positionE18E Install SpecificationsSee Installation of E18E into Existing Units for General Installation Guidance.This install of the E18E uses Vent Connection Type A.The Length of 4" Flex needed is 1-15/16" semi-expanded. Secure flue adapter top plate to under side of existing firebox using 4 self tap-ing screws.1. Loosen 2 x Phillips screws on both right and left legs.2. See above diagram below for required leg setting.3. Install with supplied Phillips screws to prepunched holes and tighten previousscrews that were loosened in Step 1.4. Keep left side leg loose until outer firebox is in position in ZC box - to allowadjustment of gas line.Firesong 220N faceplate is an outside fit, if the front metal faceof the 220N is covered with stone or tile - a custom faceplatewill be required.The following measurements of the 220N metal face will bevisible if no stone or tile is covering it. If this metal face is vis-ible, the standard Faceplate (616-920) will fit.Set to thisholeSet to thisholeRight side shownSecure top plate to firebox w/4 screws.Secure vent slide plate to flex pipe with 4screws3"(76mm)3"(76mm)1"(25mm)Firesong 220NFront Facing measurementsNote: this measurementis above lower area