diff --git a/src/client/java/com/straice/smoothdoors/client/anim/FenceGateAnimation.java b/src/client/java/com/straice/smoothdoors/client/anim/FenceGateAnimation.java
index ff5780d..77b2cd1 100644
--- a/src/client/java/com/straice/smoothdoors/client/anim/FenceGateAnimation.java
+++ b/src/client/java/com/straice/smoothdoors/client/anim/FenceGateAnimation.java
@@ -116,8 +116,8 @@ final class FenceGateAnimation {
             FenceGateSection section = classifyFenceGateQuad(quad, leftRightIsX);
             switch (section) {
                 case POSTS -> posts.add(dir, quad);
-                case LEFT -> left.add(dir, quad);
-                case RIGHT -> right.add(dir, quad);
+                case LEFT -> addDoubleSided(left, dir, quad);
+                case RIGHT -> addDoubleSided(right, dir, quad);
             }
         }
     }
@@ -148,6 +148,27 @@ final class FenceGateAnimation {
 
     private enum FenceGateSection { POSTS, LEFT, RIGHT }
 
+    private static void addDoubleSided(FenceGateCollector target, Direction dir, BakedQuad quad) {
+        target.add(dir, quad);
+        target.add(dir, reverseQuad(quad));
+    }
+
+    private static BakedQuad reverseQuad(BakedQuad quad) {
+        int[] data = quad.vertexData();
+        int stride = data.length / 4;
+        int[] flipped = new int[data.length];
+
+        for (int v = 0; v < 4; v++) {
+            int src = (3 - v) * stride;
+            int dst = v * stride;
+            System.arraycopy(data, src, flipped, dst, stride);
+        }
+
+        Direction face = quad.face();
+        Direction opposite = (face == null) ? null : face.getOpposite();
+        return new BakedQuad(flipped, quad.tintIndex(), opposite, quad.sprite(), quad.shade(), quad.lightEmission());
+    }
+
     private static final class FenceGateModels {
         final BlockStateModel posts;
         final BlockStateModel left;