JENNMAR offers the JENN-TENSION roof bolt re-tensioning system for a quick and economical alternative to the replacement of loose roof plates. The JENN-TENSION system fits up to the #7 rebar. JENN-TENSION is capable of re-tensioning roof plates with a minimum 1 in. gap between the plate and roof Each JENN-TENSION unit consists of the following items:
• Spherical Washer
• Threaded Spacer (0.5 or 1.0")
• Nut
• Extra Spacers