LFB Low Profile Diffused Rigid Light Pipes VCC LFB Low Profile Diffused Rigid Light Pipes have a diffused round 3mm surface for a super wide viewing angle at 120º. The LFB series is used with surface-mount or through-hole LEDs and has an optical grade polycarbonate for maximum light transmission. The VCC LFB series has a low profile, flush design, and a frosted surface that diffuses light that provides uniform brightness and a soft glow.