Per the Layens hive expert:
http://horizontalhive.com/buy-hive-bees/swarm-trap-top-bar-sale.shtmlLAYENS HIVE WITH FRAMES – solid wood
The classical horizontal hive. • Layens frames (13” long x 16” deep) are ideal for bees’ development and wintering. • Thick warm walls built of 1-1/2” pine – double the insulation value over conventional hives. • Ventilated top covered with aluminum. • Fully assembled and ready to go! • Premium Layens frames included, assembled and wired. • Ideal for backyard and stationary apiaries. • Two sizes: 14-frame (can hold 40 lb surplus honey) and 19-frame (recommended for areas with abundant honeyflows, can hold 80 lb surplus honey). • For complete Layens hive management instructions read his book. • UPS delivery to 48 mainland US states only.