Product Description

Hayward Wide Mouth Butterfly Skimmer Gasket – SPX1091GW
INYO #4041-38 | Hayward #SPX1091GW

Description:
This is a genuine Hayward wide mouth butterfly-style gasket for above-ground pool skimmers. It is a two-piece, joined gasket designed for added wall protection. One side of the gasket slips through the wall skimmer opening, while the other side stays on the exterior, effectively sealing and protecting the pool wall.

Also referred to as a wall protection gasket, it helps prevent damage around the skimmer cutout area.

Material: White rubber
Shape: Rectangular
Holes: 24 total (9 on top, 9 on bottom, 3 on each side)
Hole dimensions: approximately 3/8" wide × 1/4" tall

Dimensions:

• Outside Length: 13-7/8"

• Outside Height: 7-1/2"

• Inside Length: 12"

• Inside Height: 5-1/4"

Hole Spacing (center to center):

Top and Bottom:

• One center screw hole

• Holes next to center: 2-3/8" from center

• Two additional holes: 1" from the previous holes

• Final screw holes: 1" further out

• Outer screw holes: 2" from those

Sides:

• One center extra hole

• Screws above and below center: 1-1/16" from center

• Corner screw holes: about 2-1/8" from the previous

Markings:
No markings on the gasket.

Compatible Substitutes (same hole pattern, no extra side holes):

• 4020-36 – Pentair / Sta-Rite

• 4095-051 – Waterway

• 4031-080 – Pentair

Note: Dimensions may vary slightly between alternatives.

Review Summary