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Flexseal 100-115mm Drainage Coupling DC115
Flexseal 120-135mm Drainage Coupling DC135
Flexseal 120-137 Standard Coupling SC137
Flexseal 121-136 / 110-121mm Adaptor Coupling AC4000
Flexseal 180-195mm Drainage Coupling DC195
Flexseal 180-200 / 160-180mm Adaptor Coupling AC6000
Flexseal 99-103 4" Internal Push Fit Coupling IC100P