Gate Extensions (BX): Fits Stairway Special (SS-30) and Auto-Lock (MG-15)
BX Gate Extensions add extra width to Cardinal Gates Stairway Special (SS-30 / SS-30OD) and Auto-Lock (MG-15) gates. Choose the length that fits your opening and pair it with the matching color.
- 10.5″ (BX1) — Adds 10.5 inches. Ideal for moderate extra coverage.
- 21.75″ (BX2) — Adds 21.75 inches. Better for larger openings.
You can combine BX1 and BX2 extensions as needed, with a recommended maximum of two extensions total. For added stability with multiple extensions, a T-bar is recommended (sold separately
Outdoor Stainless hardware must be ordered separately for the SS-30OD here.


