Utilization of forest wood raw materials for particle board production has resulted inrndeforestation, loss of habitat for millions of species, climate change and raw materialrncompetition. Therefore, the use of non woody ligno-cellulosic raw materials is a good choice forrnparticle board production. In this study aloe and sisal stem fibers were used as a blend andrnmixed with urea-formaldehyde (UF) resin for particle board production. First the aloe and sisalrnstems were collected form Adigrat and sun dried. The dried stems were then crushed into 3mm torn6mm in size. The particles were further reduced in size by grinding (0.5-2.5mm) and classifiedrninto different classes, i.e. very fine (250Âµm-475Âµm for both aloe and sisal fibers), fine (0.5-1.4rnmm for aloe and 0.71-1.4mm for sisal fibers) and coarse (1.4-2.0 mm for aloe and 1.4-2.5 mmrnfor sisal fibers), based on the requirement for production and analysis and stored on differentrncontainers until needed. The fibers were then analyzed for their moisture, ash, extractive,rnhemicellulose, lignin and cellulose content. FTIR analysis was also performed for identificationrnof the functional groups present in the aloe and sisal stem fibers. After analysis of raw materials,rnthree layered particleboards were produced using 22cm by 22 cm mould using coarse particlesrn(60%) as core layers and fine particles (40%) as surface layers. Design expert 11 software wasrnused for design of the experiments and statistical analysis of the results.17 different boards werernproduced by varying the aloe to sisal ratio (30-60%), resin loading rate (10-15%) and pressingrnpressure(150-200 bar) at pressing temperature of 155rnC and press time of 14 minutes. Thernphysical (moisture content, water absorption and thickness swelling) and mechanical (Modulusrnof rupture (MOR), Modulus of elasticity (MOE) and Internal bond (IB)) properties of the boardsrnwere investigated and compared with the Ethiopian standards for particle board. The results ofrnthe mechanical properties test showed that the particles boards have an average values ofrn11.267 MPa MOR,1686.34 MPa MOE and 0.417 MPa IB. The analysis of physical propertiesrnalso showed that the particle boards have average values of 76.95% water absorption and 62%rnthickness swelling after 2 and 24hrs of immersion in water bath. The maximum results for MOR,rnMOE and IB were 12.42MPa, 1830.13MPa and 0.505Mpa, respectively. These values werernobserved at 45% of aloe to sisal ratio, 12.5% of resin loading and 175 bar pressing pressure.rnThe minimum values for WA and TS were 47.15% and 61.9% ,respectively. These values werernobserved at 45% of aloe to sisal ratio, 15 % of resin loading and 200 bar pressing pressure. Thernfinal results of mechanical properties were compared with the Ethiopian standards for particlernboards and they were found satisfactory for general purpose use.