Does Not Include Adjustable Pressure Unloader Or Injector

354 diameter per hole

* Ultra Quiet - Only 65 decibels

built-in die adjustment and direct flames will give you great lines every time

Allegro - 8" Two Speed Centrifugal Blower System with 8" MVP (9507 Blower) 42.0 GPM Does Not Include Adjustable PressureAir Powered Fans & Blowers for Confined SpacesAllegro's Complete Ventilation Systems include all the most asked for equipment you need for your confined space site. The systems include a choice of Allegro's most popular blowers, six feet and fifteen feet of ducting with a storage bag and a Manhole Ventilation Passthru (MVP). The Centrifugal Blower Systems offer lightweight portability with the highest output available. See individual blower