1 3/8 in. 1 lb Density EPS Sectional Door Insulation. Haircell texture White Vinyl Backer. Commercial Kerf in stock; Residential or Custom Kerf available. Additional volume pricing available. Pre-packed kits available in 1 3/8 in. x 20 1/4 in. x 48 in. and 1 3/8 in. x 20 1/4 in. x 54.