Ashton 19 ft. 5 in. x 19 ft. 5 in. Log Cabin Style Studio Guest Hobby Work Space | Hud-1 EZ Buildings The Asthon Log cabin kit is a multi-room design with front porch. The Asthon is 19 ft. 5 in. x 19 ft. 5 in. this multi-room cabin design has 360 sq. ft. of space. The Asthon offers a Perlin roof system design that gives it the open vaulted cathedral style look. The building is shipped direct to you via curbside. Roofing shingles are sold separately.