Our Dust Proof Strike Without Mounting Plate is used as a floor mount surface bolt recepticle.. The spring loaded cylinder returns flush with floor when bolt is lifted for door operation. This keeps dust and lint from collectiing in the hole when not in use. Tube Measures: 3-1/2 " in length with a 13/16" diameter. Order Your Dust Proof Srikes Today! 28401HRegular price $27.00Special Sale Price: $24.30 Finish: Polished BrassOil Rubbed BronzeSatin ChromeSatin BrassAntique BrassBright CopperBright NickelSatin NickelMatte BlackPolished ChromeAntique CopperAntique NickelUnlaquered Brass Please Select Priority Mail or FedEx shipping In Order Cart „ Vintage Lighting „ Vintage Hardware „ Vintage Plumbing „ „ Horseshoe Games „Great Gift Ideas „Bathroom Fixtures „ Design Accents „ „ Ye Olde Furniture & Decor „ Outdoor Accents „ Horseshoe Hardware „ „ Brass Accents „ Anne At Home Pewter „ Horseshoe-Hardware Hub „ „ Rustic Modern Objects „ Notting Hill Collections „ Emenee Hardware „  „ Rosalie Sherman Designs „ Carpe Diem Hardware „