Product details:
The M-D Building Products in swing sill extenders are for TH394 and TH397 style sills. They fit sills 2-Inch deep and 36-Inch wide.
Brand:M-D Building Products
Manufacturer:M-D Building Products, Inc
Manufacturer Part Number:67106
Condition:New
Assembled Product Dimensions (L x W x H):36.50 x 2.21 x 0.61 Inches