AVIATION DUCTING;INSIDE DIAMETER 2.75INCHES;COLOR-RED;PRODUCT CODE 8901-01104;STANDARD LENGTH 11FEET;INSIDE BEND RADIUS 0.75 TO 1.06INCHES;MINIMUM BURST PRESSURE 148 PSIG;CRUSH RESISTANCE-POUNDS PER FOOT-340;OPERATING TEMP RANGE -80DEG F TO +550DEG F;SUPPORT-COPPER-COATED OR BRONZE-PLATED SPRING-STEEL-WIRE HELIX BONDED BETWEEN THE LINER AND COVER MATERIAL;LINER AND THE COVER ARE FIBERGLASS FABRIC IMPREGNATED AND COATED WITH SILICONE RUBBER COMPOUNDS;CORD IS FIBERGLASS COATED WITH SILICONE