S1-121077 | BOTTOM RETURN BLOCK-OFF | York

**BOTTOM RETURN BLOCK-OFF** The York S1-121077 Bottom Return Block-Off is a durable and reliable solution for sealing the bottom return of air handling units (AHUs). This block-off provides a tight seal to prevent air leakage and maintain the efficiency of the AHU. Constructed from high-quality materials, the S1-121077 is designed to withstand the harsh conditions of industrial environments. Its compact design allows for easy installation in tight spaces, making it an ideal choice for retrofitting existing AHUs. The S1-121077 is compatible with York air handling units, ensuring a precise fit and optimal performance. By effectively blocking off the bottom return, this product helps reduce energy consumption and improve the overall efficiency of the AHU. Our HVAC supply store offers the S1-121077 Bottom Return Block-Off at competitive prices with fast shipping. Trust Our HVAC supply store for all your industrial supply needs!