P Model kilns were front-loading kilns made from the late 1940's until the mid 1970's by L&L Manufacturing Co., Inc.
We highly recommend that any older kiln, especially one over 25 years old, be evaluated by a competent professional for safety.
For old instructions, new instructions that may apply and old literature click on this link.
All parts such as elements that may be available for these kilns can be purchased at L&L Special Furnace Co., Inc. Email them at sales@hotfurnace.com or call 610-459-9216.