b'Knotty AlderDOORS STILE & RAILARCH TOPARCH TOPSQUARE TOPSQUARE TOP SMOOTH V-GROOVE SMOOTH V-GROOVEKnotty Alder 2 PanelARCH TOP ARCH TOPARCH TOPARCH TOPSQUARE TOP SQUARE TOPSIZE THICKNESS SMOOTH SMOOTH V-GROOVE V-GROOVE SMOOTH V-GROOVEFIRE RATED FIRE RATED1-0x6-8 1-3/8" 4PA - - - - -1-3x6-8 1-3/8" 4PB - 4PN - - -1-6x6-8 1-3/8" 4PC - 4PO - RBA RBG1-6x6-8 1-3/4" - - 4QH - - -2-0x6-8 1-3/8" 4PD - 4PP - RBB RBH2-0x6-8 1-3/4" 4PZ - 4QI - - -2-4x6-8 1-3/8" 4RM - 4RO - RBC RBI2-4x6-8 1-3/4" 4RQ - 4RS - - -2-6x6-8 1-3/8" 4PE - 4PQ - RBD RBJ2-6x6-8 1-3/4" 4QA - 4QJ - - -2-8x6-8 1-3/8" 4PF - 4PR - RBE RBK2-8x6-8 1-3/4" 4QB - 4QK 4QU 4RE 4RF3-0x6-8 1-3/8" 4PG - 4PS - RBF RBL3-0x6-8 1-3/4" 4QC 4QR 4QL 4QV RBS RBZ1-6x8-0 1-3/8" RPH - 4PT - 2YA 2YG1-6x8-0 1-3/4" 4RY - 4RZ - RBM RBT2-0x8-0 1-3/8" 4PI - 4PU - 2YB 2YH2-0x8-0 1-3/4" 4QD - 4QM - RBN -2-4x8-0 1-3/8" 4RN - 4RP - 2YC 2YI2-4x8-0 1-3/4" 4RR - 4RT - RBO RBV2-6x8-0 1-3/8" 4PJ - 4PV - 2YD 2YJ2-6x8-0 1-3/4" 4QE - 4QN - RBP RBW2-8x8-0 1-3/8" 4PK - 4PW - 2YE 2YK2-8x8-0 1-3/4" 4QF 4QS 4QO 4QW RBQ RBX3-0x8-0 1-3/8" 4PL - 4PX - 2YF 2YL3-0x8-0 1-3/4" 4QG 4QT 4QP 4QX RBR RBY3-6x8-0 1-3/4" - - 4SS - - -Fire Rated Features: 20-minute positive pressure, 3 bevel on both sides30 Table of Contents'