a head bar and a parallel bottom bar, a plurality of stiles perpendicular to and interconnecting said head bar and said bottom bar, and a plurality of elongated louvers mounted for pivotable movement between said stiles, each of said louvers having an axially extending tilt pin of circular cross-section at one end of the louver, and

at least one tilt bar, said tilt bar having connectors thereon extending perpendicularly to the axial direction of said louvers for removable attachment to said tilt pins so that translation of said tilt bar moves said louvers between open and closed positions; said connectors being of substantially C-shaped cross section defining resilient arms adapted to spread apart to receive the tilt pins and thereby capture and be releasably attached to the tilt pins, said resilient arms each comprising a continuously curved inner surface extending from a distal end thereof to a medial portion thereof, said curved inner surfaces of each of said connecters facing one another to define an oval opening therebetween continuously slidably retaining a respective one of said tilt pins.