drilled through hole for CO2 line. IMPORTANT - I drilled from the inside first, (in case I ran into freon lines, the outside wouldnt look like swiss cheese as I hunted for a place without the lines) just going through the plastic and feeling around in the

drilled through hole for CO2 line. IMPORTANT - I drilled from the inside first, (in case I ran into freon lines, the outside wouldnt look like swiss cheese as I hunted for a place without the lines) just going through the plastic and feeling around in the insulation to make sure the freon lines wont be hit, then drilling the rest of the way through