diff --git a/Source/dump.f90 b/Source/dump.f90
index 6da3385495c..fbdd3a636c6 100644
--- a/Source/dump.f90
+++ b/Source/dump.f90
@@ -1510,8 +1510,7 @@ SUBROUTINE WRITE_SMOKEVIEW_FILE
 USE HVAC_ROUTINES, ONLY: N_DUCT_QUANTITY,N_NODE_QUANTITY, DUCT_QUANTITY_ARRAY,NODE_QUANTITY_ARRAY
 USE TRAN, ONLY: TRAN_TYPE,TRANS
 USE MISC_FUNCTIONS, ONLY : ACCUMULATE_STRING
-INTEGER :: N,NN,I,J,K,NM,NX,NY,NZ,NIN,NXL,NYL,NZL,COLOR_INDEX,IZERO,STATE_INDEX,SURF_INDEX,&
-            TYPE_INDEX,HI1,HI2,VI1,VI2,FACE_INDEX,VRGB(3),N_CVENT
+INTEGER :: N,NN,I,J,K,NM,NX,NY,NZ,NIN,NXL,NYL,NZL,COLOR_INDEX,IZERO,STATE_INDEX,TYPE_INDEX,HI1,HI2,VI1,VI2,FACE_INDEX,N_CVENT
 INTEGER, ALLOCATABLE, DIMENSION(:,:,:) :: VENT_INDICES
 REAL(EB) :: X1,Y1,Z1,X2,Y2,Z2,XX,YY,ZZ,PERT1(4),PERT2(4),XMIN,YMIN,ZMIN,XA,YA,ZA
 TYPE SEGMENT_TYPE
@@ -2288,11 +2287,8 @@ SUBROUTINE WRITE_SMOKEVIEW_FILE
           VT%BOUNDARY_TYPE==PERIODIC_BOUNDARY .OR. &
           VT%TYPE_INDICATOR==2) THEN  ! Render this vent invisible in Smokeview
          WHERE (VENT_INDICES(HI1:HI2,VI1:VI2,FACE_INDEX)==0) VENT_INDICES(HI1:HI2,VI1:VI2,FACE_INDEX) = -1
-      ELSE  ! Make solid color vents invisible (they will be replaced by dummy vents)
+      ELSE  ! Vent on a solid wall
          WHERE (VENT_INDICES(HI1:HI2,VI1:VI2,FACE_INDEX)==0) VENT_INDICES(HI1:HI2,VI1:VI2,FACE_INDEX) = N
-         VT%COLOR_INDICATOR =  8
-         VT%TYPE_INDICATOR  = -2
-         VT%TRANSPARENCY    =  0._EB
       ENDIF
 
    ENDDO VENT_LOOP
@@ -2363,11 +2359,9 @@ SUBROUTINE WRITE_SMOKEVIEW_FILE
    ENDDO
 
    DO N=1,M%N_EXTERIOR_PATCH
-      SURF_INDEX = DEFAULT_SURF_INDEX
       EP => M%EXTERIOR_PATCH(N)
-      IF (EP%VENT_INDEX>0) SURF_INDEX = M%VENTS(EP%VENT_INDEX)%SURF_INDEX
       WRITE(MYSTR,'(6F14.5,I6,I4)') M%X(EP%I1),M%X(EP%I2),M%Y(EP%J1),M%Y(EP%J2),  &
-                                    M%Z(EP%K1),M%Z(EP%K2),M%N_VENT+N,SURF_INDEX; CALL ADDSTR
+                                    M%Z(EP%K1),M%Z(EP%K2),M%N_VENT+N,DEFAULT_SURF_INDEX; CALL ADDSTR
    ENDDO
 
    DO N=1,M%N_VENT
@@ -2393,15 +2387,8 @@ SUBROUTINE WRITE_SMOKEVIEW_FILE
    DO N=1,M%N_EXTERIOR_PATCH
       COLOR_INDEX = 99
       TYPE_INDEX  = 0
-      VRGB        = -1
       EP => M%EXTERIOR_PATCH(N)
-      IF (EP%VENT_INDEX>0) VRGB = M%VENTS(EP%VENT_INDEX)%RGB
-      IF (VRGB(1)<0) THEN
-         WRITE(MYSTR,'(8I5)') EP%I1,EP%I2,EP%J1,EP%J2,EP%K1,EP%K2,COLOR_INDEX,TYPE_INDEX; CALL ADDSTR
-      ELSE
-         WRITE(MYSTR,'(8I5,4F13.5)') EP%I1,EP%I2,EP%J1,EP%J2,EP%K1,EP%K2,COLOR_INDEX,TYPE_INDEX, &
-                                     REAL(VRGB,FB)/255._FB,1._EB; CALL ADDSTR
-      ENDIF
+      WRITE(MYSTR,'(8I5)') EP%I1,EP%I2,EP%J1,EP%J2,EP%K1,EP%K2,COLOR_INDEX,TYPE_INDEX; CALL ADDSTR
    ENDDO
 
    ! Write out information about circular vents to Smokeview file
@@ -2474,18 +2461,17 @@ END SUBROUTINE EOL
 SUBROUTINE DUMMY_VENTS(FI,N1,N2)
 
 INTEGER, INTENT(IN) :: N1,N2,FI
-INTEGER :: I,J,II,JJ,ISTP,JSTP,VENT_INDEX
+INTEGER :: I,J,II,JJ,ISTP,JSTP
 
 JLOOP: DO J=1,N2
    ILOOP: DO I=1,N1
 
-      IF (VENT_INDICES(I,J,FI)==-1) CYCLE ILOOP
-      VENT_INDEX = VENT_INDICES(I,J,FI)
+      IF (VENT_INDICES(I,J,FI)/=0) CYCLE ILOOP
 
       ISTP = N1
       JSTP = N2
       JJLOOP: DO JJ=J+1,N2
-         IF (VENT_INDICES(I,JJ,FI)/=VENT_INDEX) THEN
+         IF (VENT_INDICES(I,JJ,FI)/=0) THEN
             JSTP = JJ-1
             EXIT JJLOOP
          ENDIF
@@ -2493,7 +2479,7 @@ SUBROUTINE DUMMY_VENTS(FI,N1,N2)
 
       IILOOP: DO II=I+1,N1
          JJLOOP2: DO JJ=J,JSTP
-         IF (VENT_INDICES(II,JJ,FI)/=VENT_INDEX) THEN
+         IF (VENT_INDICES(II,JJ,FI)/=0) THEN
             ISTP = II-1
             EXIT IILOOP
          ENDIF
@@ -2518,7 +2504,6 @@ SUBROUTINE DUMMY_VENTS(FI,N1,N2)
          CASE (6) ; EP%K1=M%KBAR ; EP%K2=M%KBAR ; EP%I1=I-1 ; EP%I2=ISTP ; EP%J1=J-1 ; EP%J2=JSTP ; EP%IOR=-3
                     EP%KG1=EP%K1 ; EP%KG2=EP%K2 ; EP%IG1=I  ; EP%IG2=ISTP; EP%JG1=J  ; EP%JG2=JSTP
       END SELECT
-      EP%VENT_INDEX = VENT_INDEX
 
    ENDDO ILOOP
 ENDDO JLOOP
diff --git a/Source/type.f90 b/Source/type.f90
index c52a5606ac3..52c6509a090 100644
--- a/Source/type.f90
+++ b/Source/type.f90
@@ -1555,7 +1555,7 @@ MODULE TYPES
 END TYPE RAD_FILE_TYPE
 
 TYPE PATCH_TYPE
-   INTEGER :: I1,I2,J1,J2,K1,K2,IG1,IG2,JG1,JG2,KG1,KG2,IOR=0,OBST_INDEX=0,VENT_INDEX=0,MESH_INDEX=0
+   INTEGER :: I1,I2,J1,J2,K1,K2,IG1,IG2,JG1,JG2,KG1,KG2,IOR=0,OBST_INDEX=0,MESH_INDEX=0
 END TYPE PATCH_TYPE
 
 TYPE BOUNDARY_FILE_TYPE