This dispensing gun is for use with Green Glue Noiseproofing Compound 5-gallon pails. To use, insert the tip into the bucket and pull back on the handle to suction product into the dispenser, then squeeze the trigger to apply product. This dispenser holds the same amount of product as 1 standard tube of Green Glue, so the same application rate of two dispenser-loads per 4x8 sheet of drywall applies.
If you are using Green Glue products in tubes, not pails, you need a standard 1-quart caulking gun, not this dispenser.
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