Caviweep Translucent Polypropylene Beak Weep - 108mm Properties Weep dimensions: 108mm x 65mm x 8mm. Ex duct dimensions: 200mm x 65mm x 9mm. Material: polypropelene. Colour: translucent. ODP: zero. Description The Beak Weep offers discreet water discharge via a small protruding beak. The flow path is direct to an outlet at the bottom of the beak that provides protection against directly blowing wind. The Beak Weep matches the height of a standard perp joint, but has a reduced front section.