The invention provides an outdoor enclosure for housing telecommunications equipment. The sealing device has a circumferential length, an axial width, and a radial height and contains a plurality of channels extending axially along the seal inner surface for passing a controlled amount of cooling air to a turbine inlet. The longitudinal side surfaces include first and second side surfaces. The latch is carried on and fastened to the motherboard opposite the card edge connector without being assembled with the card edge connector. Deflection of the thin lip portion can reduce a sliding resistance while ensuring a sealing performance of the seal portion.