PRODUCT DESCRIPTION 117837, 30 INCH FBG REIN. PLASTIC THRESHOLD. Norlake Genuine OEM replacement part. Norlake has become a leader in high-quality refrigeration for the commercial foodservice operating. Use genuine OEM parts for safety reliability and performance. FROM THE MANUFACTURER 117837, 30 INCH FBG REIN. PLASTIC THRESHOLD. Norlake Genuine OEM replacement part. Norlake has become a leader in high-quality refrigeration for the commercial foodservice operating. Use genuine OEM parts for safety reliability and performance.