For testing reduced pressure principle

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the wall must be between 5-1/2 inches and 9-7/8 in thickness

Bradley 209-030 Shroud-30" (Econowall) Replacement Part

San Jamar Smart System With Iq Sensor Towel Dispenser, 16 1/2 X 9 3/4 X 12, White/Clear - SJMT1470WHCL Nominal Size-29" X 1.25" For testing reduced pressure principleiQ Sensor technology offers consistent paper dispensing, fewer misfires and length and delay adjustment System features replaceable drive module and downloadable usage to PDA Holds up to 8 roll Automatic transfer reduces stub roll waste Touchless design reduces risk of cross contamination Extended battery life (requires 4 D alkaline batteries, not included) Self adjusting sensing field Does not allow free pulling of paper Dual mode functionality: set