For 1/2" door thickness, use 4 spacer plates (7100-08) For 5/8" door thickness, use 2 spacer plates (7100-08) For 3/4" door thickness, no spacers needed For 7/8" door thickness, use 2 spacer rings (7100-07) For 1" door thickness, use 4 spacer rings (7100-07) A) 1-1/2" B) 2-1/4" C) 7/8" D) 3/4" E) 1-1/8" Latch comes with (1) spacer ring 7100-07 and (1) spacer plate 7100-08 Fastener #10 FH - NOT Included Button Color Will Not Fade Over Time Man Ship Stainless Steel Push Button Square Cabinet Latch Designed and built to marine grade Stainless Steel inner mechanisms to avoid corrosion For door thickness between 1/2" to 1" High quality. Button color will not fade over time