Product availability as of 22-Nov-09 Name Size Color Availability AirVent Drybloc Solid XS - 5 x 7.25 x 20 in. Various Ships within 24 hours. AirVent Drybloc Solid SM - 5.25 x 7.75 x 21 in. Various Ships within 24 hours. AirVent Drybloc Solid MD - 6 x 8.75 x 22.5 in. Various Ships within 24 hours. AirVent Drybloc Solid LG - 7 x 10 x 25 in. Various Ships within 24 hours. Go back to the AirVent Drybloc Solid