(3E22) AMSP-2 FILTERS ARE CONSTRUCTED OF TWO SYNTHETIC LAYERS SEALED OVER A METAL WIRE FRAME.THE FIRST LAYER, DRY AND WHITE, ACTS AS A PREFILTER TO REMOVE THE MEDIUM AND LARGE PARTICLES. THE SECOND LAYER, GREEN WITH AN ADHESIVE, REMOVES AND RETAINS THE SMALLER PARTICLES. AMSP-2 PANELS FILTERS ARE DESIGNED TO FIT ANY STANDARD CROSS DRAFT BOOTH. THEY ARE NORMALLY FOUND IN THE BOOTH DOORS.