Check the listing for details. Gamm Blast Cabinet Window Underlayment Dispenser. Condition: New. Listed at 239.00 USD. New Product - #10006A Window Underlayment Dispenser, furnished as standard equipment on all new Gamm blast cabinets and has been very popular as a big improvement for existing machines. Fits ALL Gamm cabinets and most others with 12x24 window. Makes changing the window underlayment a 15 second job using no tools, not even a knife. Holds a 30 foot roll of underlayment, but will also accept the traditional 10 foot rolls. Includes everything needed including a laser cut & cnc formed frame with lexan window, 30 foot roll of plastic window underlayment,, all hardware, new window seals, easy illustrated installation instructions. No drilling or cutting. Standard color Gamm beige, also available in machinery grey and others no extra charge upon request.