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Combustion chamber floor insulation blanket or base liner for oil-fired or gas-fired boilers. Made from 2300F rated ceramic fiber. Comes with instructions how to cut to size for common applications. Also comes with waterglass to adhere Size: 24'' x 20'' x 1/2''. FIT: Fits many boiler including Weil McLain 66 & 68 Series, Weil Mclain Gold, Burnham V1, V3, V7, V8, Peerless EC/ ECT, Peerless JO/JOT, Peerless WB/WV. Replaces Gold: 591-222-115 66/68 Series: 591-221-230, 591-221-231, 591 -221-232, 591-221-233, 591-221
