LiftMaster Chain Tensioner 1-1/4" MAXUM DC

• For use with various LiftMaster® MAXUM DC Standard-Duty and Industrial-Duty Commercial Door Operators; manufactured after 2023 only.
• Chain Spreader for Maxum for 1" door shaft

LiftMaster Chain Tensioner 1" MAXUM DC

• For use with various LiftMaster® MAXUM DC Standard-Duty and Industrial-Duty Commercial Door Operators; manufactured after 2023 only.
• Spreader for Maxum operators and 1" door shaft

Micanan Trolley Track Spreader Bar Assembly 1 Unit Only

• 3/4" x 5.79" long
• 2 are included when bought in the kit #MX-00119

Chain Tensioner for 1" / 1-1/4"

• Chain spreader for installation with 1" operator shaft and 1-1/4" door shaft
• Designed to keep tension on the chain when used with a wall mount commercial operator. It helps avoid premature wear on the door shaft bearing and commercial operator output shaft bearing

Chain Tensioner for 1-1/4" / 1-1/4"

• Chain spreader for installation with 1-1/4" operator shaft and 1-1/4" door shaft
• Designed to keep tension on the chain when used with a wall mount commercial operator. It helps avoid premature wear on the door shaft bearing and commercial operator output shaft bearing