Setp1: Measure the height (H) from the underside of the dogs stomach to the floor. Mark height (H) on panel with tape or similar
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Setp2: Using the cutting template card. Mark outline with marker pen. Cut out the opening cutting along the mark outline
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Setp3: Place a bead of construction silicon around the internal section of the pet door and on the surface around the cut out to provide a weather seal
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Setp4: Insert the inner and outer frame into the cut out and clamp tightly together. Drill screws in the tunnel to fix it and ensure they are evenly distributed
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