diff --git a/resources/views/rd/fire-shutter-drawing/index.blade.php b/resources/views/rd/fire-shutter-drawing/index.blade.php
index 1b1ce619..d33e5d8f 100644
--- a/resources/views/rd/fire-shutter-drawing/index.blade.php
+++ b/resources/views/rd/fire-shutter-drawing/index.blade.php
@@ -1337,10 +1337,10 @@ function renderSbSide() {
                     <rect x="${cx}" y="${cy-c50-c20}" width="${vt*0.7}" height="${c20}" fill="${cCol}" stroke="${cStr}" stroke-width="0.8" opacity="0.85"/>
                     <!-- Seg4: 수평부 (50mm ←, 밑면 선반) -->
                     <rect x="${cx-c50}" y="${cy}" width="${c50+vt}" height="${vt}" fill="${cCol}" stroke="${cStr}" stroke-width="0.8" opacity="0.85"/>
-                    <!-- Seg5: 하부 스텝 (15mm ↓, 선반 좌측 끝에서 하향) -->
-                    <rect x="${cx-c50}" y="${cy+vt}" width="${vt*0.7}" height="${c15}" fill="${cCol}" stroke="${cStr}" stroke-width="0.8" opacity="0.85"/>
+                    <!-- Seg5: 하부 스텝 (15mm ↑, 선반 좌측 끝에서 상향, 린텔과 동일) -->
+                    <rect x="${cx-c50}" y="${cy-c15}" width="${vt*0.7}" height="${c15+vt}" fill="${cCol}" stroke="${cStr}" stroke-width="0.8" opacity="0.85"/>
                     <!-- Seg6: 하부 립 (20mm ←, 점검구 우측 플랜지와 결합) -->
-                    <rect x="${cx-c50-c20}" y="${cy+c15}" width="${c20+vt}" height="${vt*0.7}" fill="${cCol}" stroke="${cStr}" stroke-width="0.8" opacity="0.85"/>
+                    <rect x="${cx-c50-c20}" y="${cy-c15}" width="${c20+vt}" height="${vt*0.7}" fill="${cCol}" stroke="${cStr}" stroke-width="0.8" opacity="0.85"/>
                     <text x="${cx-c50/2}" y="${cy-c50/2}" fill="${cCol}" font-size="6" font-weight="700" text-anchor="middle" font-family="Pretendard" opacity="0.6">코너부</text>
                 `;
             })()}