Electrical - Panels
40/40 version available from:
3' 2-1/5" tall, 1' 3-1/2" wide
Best to get the version that allows plug-on Neutral breakers as it takes either breaker type.
20/40 version available for about $87 from:
http://www.lowes.com/pd_12551-1318-G2040B1200CU_4294821907+4294965278_4294937087_?productId=1008201&Ns=p_product_prd_lis_ord_nbr|0||p_product_quantity_sold|1&pl=1¤tURL=%2Fpl_Siemens_4294821907%2B4294965278_4294937087_%3FNs%3Dp_product_prd_lis_ord_nbr%7C0%7C%7Cp_product_quantity_sold%7C1&facetInfo=Siemens
Details of the full range of Siemens panels from Lowes at:
http://www.lowes.com/pl_Siemens_4294821907+4294965278_4294937087_