MRC:
Those unusual or unique characteristics or qualities of an item not covered in the other requirements and which are determined to be essential for identification.FEAT
Special Features:
Insulated using johns-manville mirco-fiber felt, .25 inches thick, 4 pounds/cubic foot density; compressed to athickness of .17 inches unless otherwise shown; insulation cover shall be fiberglass cloth (no.164) .019 thick; impreganted with silicone rubber uncured black; also made with nickel chromium alloy; weight is 7.83 pounds when insulated, 7.16 pounds when uninsulated