- 5/16” (8 mm) best for ¾” (20 mm) to 1 ½” (40 mm) lines.
- Approved by CSA and UL Standards (115V only).
- 5/16” (8 mm) best for 3/4” (20 mm) to 1 1/2” (40 mm) lines.
- 3/8” (10 mm) best for 1 1/4” (32 mm) to 2” (50 mm) lines.
- Approved by CSA and UL Standards.
- 3/8” (10 mm) best for 1 ¼” (32 mm) to 2” (50 mm) lines.
