Greenteq Omega LetterboxThe Greenteq Omega Letterbox features a strong, cushioned closing action to stop rattling and internal brush seals and external Thermo Plastic Rubber and Polyethylene seals to provide high quality draught and water protection. Both the inner and outer flaps feature indentations on the lower frame to allow easy finger access and both open to a full 180 to avoid damage from rings or over stressing the springs. All metal frame construction Suits 40 80mm