This Handle Set Trim is Used on the Larson Secure Elegance Storm door with Multipoint Lock (MPL) The lock mechanism might say Rockwell or Larson, has 2 hooks and spring latch in center. ( 2-point lock is NOT included.) 

Manufacture: Larson Storm Doors and Windows
Door Thickness: 1-1/2 -1-3/4 inch
Handle PZ: 3-5/8 inch (92mm)
Cylinder Type: Euro Profile 
Keyway: Kwikset 5 pin KW1
Rekeyable: Yes, hex screw caps on top 
Lever Length: 4-5/8"
Lever Projection: 2"
Faceplate Length: 9-3/4"
Faceplate Width: 1-5/8"
Inside Plate: Flat, 1/16 inch thick 
Outside Plate : Raised, 3/8 inch thick
Material: Brass
Colors: Polished Brass, Brushed Satin Nickel, Aged Bronze
Screw Spacing on Plate: 7-3/4 inch 
Handle set Screws: 10-32 x 1-3/4 inch Pan head 
Spindle: 5/16 Diameter, 3-1/2 inch Length
Cylinder Fixing Screw: # 10-32 x 1-1/2 inch 

Can be used on the following Larson door models:
349-20
349-15
349-17
96-MV

Related Larson Hardware:
305017 - 2-point Hook Lock

NOTE: This lock will work with a HOPPE MPL, However depending on existing hardware and screw hole locations, it may be necessary to drill new holes or enlarge existing ones.
Hoppe 216N or 374N Plate - Top to Bottom screw hole spacing: 7-7/8 inch ( 1/8" difference)