Johns Manville R 11 Kraft Faced Fiberglass Batt Insulation, 237.66 sq ft Coverage, 23 in W x 93 in L (K1255) Outside Corner Trim Handing Left or Right Handed Grey Vanity Handing Left or Right Handed Exterior Access Key Interior Action Turn Button Knob Style Round (Tylo) Faceplate Material Brass Latch Plate Round Corner Keyway K6 Commercial or Residential Residential Indoor or Outdoor Outdoor Trim Rings Yes Packaging Type Clamshell Material Steel width equals height Warranty 1‑Year Limited Warranty Compatible devices Most smart locks and smart Wi‑Fi doorbells Frequently Asked Questions (FAQ): A: R 11 thermal resistance with a 3 A: 2x4 wood stud walls with 24 in on center stud spacing and 9 ft wall height