Blue Mountain Mini Storage proudly serves the Walla Walla, WA area - offering 150 storage units with sizes ranging from 5' x 10' to 10' x 28'. We are dedicated to providing prompt, professional service and a secure storage facility because we believe you deserve nothing less. At Blue Mountain Mini Storage, your comfort and satisfaction are our main priorities. Storage Units - Walla Walla, WA - Blue Mountain Mini Storage About Blue Mountain Mini Storage 150 storage units 24-hour video surveillance Fenced and well lighted Storage unit sizes 5' x 10' 8' x 12' 8' x 20' 10' x 12' 10' x 20' 10' x 28' We are conveniently located just off Rose Street.