Feature●One-piece construction for added strength. Used as breathers for mattresses, cushions and plastic slipcovers.●These ventilators are set with CS Osborne No. 621-1 Ventilator Setter and can be also set using Osborne Hand Press W-1 & Pneumatic Machine W-3 with the ventilator dies.●Size : 1" (Osborne No. V-1 1)●Diameter of hole when set : 3/4"●Packed one grossDescription
One-piece construction for added strength. Used as breathers for mattresses, cushions and plastic slipcovers. These ventilators are set with CS Osborne No. 621-1 Ventilator Setter and can be also set using Osborne Hand Press W-1 & Pneumatic Machine W-3 with the ventilator dies. Size : 1" (Osborne No. V-1 1) Diameter of hole when set : 3/4" Packed one gross