1. Distinguish Method Grade A: knots are not allowed; Grade B：Quantity of knots per pc: 1-3pcs and the diameter of knots whose color are black is within 8mm and diameter of knots whose color are nearly same as veneer is within 10mm; Grade C: Quantity of knots per pc: 1-3pcs and the diameter of knots whose color are black is within 20mm and diameter of knots whose color are nearly same as veneer is within 25mm; In addition, 20% of white edge of plank width is allowed and medium color variation is allowed; Grade D: Quantity of knots per pc: 1-3pcs and the diameter of knots whose color are black is within 30mm and diameter of knots whose color are nearly same as veneer is unlimited; In addition, length of crack is within 30cm and severe color variation is allowed;
Unilin Engineered Flooring
Smooth Surface Engineered Flooring
T&G Engineered Flooring
Hand-scraped Brushed Engineered Flooring
CDE engineered flooring
Light Wire-Brushed Engineered Flooring
ABCD engineered flooring
AB engineered flooring
ABC engineered flooring
| Flooring Type | Prefinished | Species | Maple/Hard Maple |
| Color | Brown | Shade | Medium/Neutral Shade |
| Finish Type | Urethane | Gloss Level | Low-Gloss |
| Application | Residential | Core Type | Multi-Ply |
| Profile | Tongue & Groove | Edge Type | French Bleed |
| Maximum Length (in.) | 48 | Minimum Length (in.) | 20 |
| Average length (in.) | 33 | Width (in.) | 5 |
| Thickness (in.) | 0.55 | Radiant Heat Compatible | No |
| Below Grade | Yes | Installation | Floating, Glue Down, Nail Down, Staple Down |
| Certification | CARB II | Wear Layer Thickness (mm) | 3 |
| Surface Finish | Distressed, Handscraped | Finish Warranty (in years) | 25 years |
| Structural Warranty (in years) | 25 Years | Country of Origin | China |
| Packaging Dimensions (inches) | Height: 4.75 Length: 84 Width: 5 | Product Dimensions | Height: 9/16" Length: 15 3/4 - 47 1/4" Width: 5" |
| Sqft / Box | 17.5 | Proposition 65 | Attention California Residents |
