Add to Cart Quick view Sylvania 5U4GB & 5R4GYB Rectifier Tube Set Ideal for Collins 516F-2 Power Supply NOS Tested / Guaranteed Sylvania MSRP: Now: $44.99 Was: Sylvania 5U4GB & 5R4GYB Rectifier Tube Set Ideal for Collins 516F-2 Power Supply NOS Tested / Guaranteed... MSRP: Now: $44.99 Was: Add to Cart Quick view Qty in Cart: 0 Quantity: Decrease Quantity: Increase Quantity: Price: MSRP: Now: $44.99 Was: Subtotal: Add to Cart